What prefix would you add to the root word 'view' to indicate that you see something before other people do?

Select the option that can be used as a one-word substitute for the given group of words.
 Unable to speak distinctly or express oneself clearly

Select the option that expresses the given sentence in passive voice

I need to evaluate all the options available by the end of this month.

Select the most appropriate option to substitute the underlined segment in the given sentence.
 Our guests arrived; they are sitting in the garden.

Select the word with the correct spelling.

Options:

Directions: In the following questions, out of the four alternatives, choose the one which best expresses the meaning of the given word.

EVINCE

Transform the given sentence as directed choosing the best option. Someone seems to have made a terrible mistake.
 (Change to passive) 

Select the most appropriate synonym of the given word.
Malign