Answer: A) M & N Explanation: There are 26 English Alphabets. They are:   A,B,C,D,E,F,G,H,I,J,K,L,M,N,O,P,Q,R,S,T,U,V,W,X,Y,Z.   Therefore, from the left end the 13th letter is M and is Consonent. And from the right end the 13th letter is N and is Consonent.

Answer: A) The auditory tube drains into the nasopharynx Explanation:

Answer: C) train Explanation: Train becomes trail when the "n" is replaced by an "l", and grain becomes grail when the "n" is replaced by an "l".

Answer: A) tin and silver Explanation: Tin and Silver are malleable and good conductors of electricity. The other combinations have a non metal in them which are bad conductors.

Answer: A) W Explanation: W is the symbol for chemical element Tungsten or Wolfram. It is used in making filaments of bulbs.

Answer: D) The kidneys deactivate vitamin D and stimulate the activity of osteoclasts Explanation: The kidneys deactivate vitamin D and stimulate the activity of osteoclasts is wrong among the functions of kidneys.   The kidneys are two bean-shaped organs in the renal system. They help the body pass waste as urine. They also help filter blood before sending it back to the heart.   The kidneys perform many crucial functions, including: maintaining overall fluid balance. regulating and filtering minerals from the blood. filtering waste materials from food, medications, and toxic substances. creating hormones that help produce red blood cells, promote bone health, and regulate blood pressure.

Answer: D) 14 Explanation: The given number series is 96, 95, 87, 78, ?  It follows a pattern that, 9696 - 12 = 9595 - 23 = 95 - 8 = 8787 - 32 = 87 - 9 = 7878 - 43 = 78 - 64 = 14   Hence, the next number in the given number series is 14.

Answer: A) the right to vote Explanation: The defining right of a representative democracy is the ability to vote for representatives to make decisions on their behalf.   In democratic government, elections are held regularly, in which voters vote for someone who will serve in the levels of local, state, and federal government.