Select the option that can be used as a one-word substitute for the given group of words.

To walk aimlessly

Directions :Read the given passage carefully and answer the following questions. Certain parts have been highlighted to help answer the questions.
  Every year, around one million people die of mosquitoborne diseases according to the World Health Organization (WHO). This is why mosquitoes are considered one of the deadliest living creatures on the planet — not because they are lethal themselves, but because many of the viruses and parasites they transmit are
 In the absence of an effective vaccine for dengue fever, Zika fever, chikungunya and other mosquito-borne diseases, researchers have developed genetic strategies to reduce mosquito populations. One such strategy involves the release into the wild of genetically modified (GM) mosquitoes that express a lethal gene — a strategy believed to have little impact on the overall DNA of wild populations of mosquitoes
 The transfer of new genes from GM organisms to wild or domesticated non-GM populations is a key criticism of GM crops like soybean and corn. There are concerns that the introduction of GM genes into non-target species could have negative consequences for both human and environmental health.
 Oxitec, a company that spun out of research at Oxford University in the early 2000s, developed and trademarked GM Friendly™ mosquitoes (also known as strain OX513A of Aedes aegypti). These male GM mosquitoes have what the company describes as a “self-limiting” gene, which means that when these so-called friendly mosquitoes’ mate, their offspring inherit the self-limiting gene which is supposed to prevent them surviving into adulthood.
 In theory, when these mosquitoes are released in high numbers, a dramatic reduction in the mosquito population should follow. According to research published by Oxitec researchers in 2015, field trials involving recurring releases of Friendly™ mosquitoes demonstrated a reduction of nearly 95 per cent of target populations in Brazil. In these field trials, experiments were not performed to assess whether GM mosquitoes might persist in the wild.
 A recent study from the Powell lab at Yale University has since confirmed that some of the offspring of the GM mosquitoes didn’t succumb to the self-limiting lethal gene and survived to adulthood. They were able to breed with native mosquitoes and thereby introduce some of their genes into the wild population
 Meanwhile, the impact of mosquitoes carrying these new genes remains largely unknown. One significant worry is that a new breed of mosquito might emerge that is more difficult to control. These new genes could also potentially alter evolutionary pressures on viruses carried by mosquitoes, like dengue fever, in unpredictable ways. This includes potentially increasing their virulence or changing their host-insect interactions. These are hypothetical risks that have been raised by scientists, and reflect the need for further study.

What can be the potential side effect(s) of genetically modified mosquito offspring?

Choose the correct one word 'A study of the human race.'

You have eight brief passages with 10 questions following each passage. Read the passages carefully and choose the best answer to each question out of the four alternatives 

Time was when people looked heavenward and prayed, “Ye Gods, give us rain, keep drought away.” Today there are those who pray. “Give us rain, keep El Nino away.” 

El Nino and its atmospheric equivalent, called the Southern Oscillation, are together referred to as ENSO, and are household words today. Meteorologists recognize it as often being responsible for natural disaster worldwide. But this wisdom dawned only after countries suffered, first from the lack of knowledge, and then from the lack of coordination between policy making and the advances in scientific knowledge. 

Put simply, El Nino is a weather event restricted to certain tropical shores, especially the Peruvian coast. The event has diametrically opposite impacts on the land and sea. The Peruvian shore is a desert. But every few years, an unusually warm ocean current - El Nino - warms up the normally cold surface-waters off the Peruvian coast, causing very heavy rains in the early half of the year, 

And then, miraculously, the desert is matted green. Crops like cotton, coconuts and banana grow on the otherwise stubbornly barren land. These are the Peruvians’ anos de abundencia or years of abundance. The current had come to be termed El Nino, or the Christ Child because it usually appears as an enhancement if a mildly warm current that normally occurs here around every Christmas. 

But this boon on land is accompanied by oceanic disasters. Normally, the waters off the South American coast are among the most productive in the world because of a constant upwelling of nutrient rich cold waters from the ocean depths. During an El Nino, however waters are stirred up only from near the surface. The nutrient-crunch pushes down primary production, disrupting the food chain. Many marine species, including anchoveta (anchovies) temporarily disappear. 

This is just one damning effect of El Nino. Over the years its full impact has been studied and what the Peruvians once regarded as manna, is now seen as a major threat. 

How can we say that El Nino proves to be a boon for South American Coast ?  

Directions:  In the following question, a sentence is given with four words marked as (A), (B), (C) and (D). These words may or may not be placed in the correct order. Four options with different arrangements of these words have been provided. Mark the option with the correct arrangement as the answer. If no rearrangement is required, mark option (E) as your answer.

It would ensure(A) with local government authorities(B) and healthcare providers to collaborate(C) its service partners(D) are fully vaccinated over the next few months. 

Directions:  In the following question, a sentence is given with four words marked as (A), (B), (C) and (D). These words may or may not be placed in the correct order. Four options with different arrangements of these words have been provided. Mark the option with the correct arrangement as the answer. If no rearrangement is required, mark option (E) as your answer.

Several (A) political parties votes(B) with each other for pulling(C) more vie(D) for themselves

Select the most appropriate synonym of the given word.

RELUCTANT

Select the INCORRECTLY spelt word.

A Tution

B Manners

C Genuine

D Circuit