Given a sentence with a missing word, pick the answer option that best fills out the missing word in the sentence. Indicate each answer with its index ('a', 'b', 'c', 'd').

Input: Consider Input: Cigarette smokers are ____ times more likely to die of lung cancer than nonsmokers.\Question: Choose the right answer from options given a) ten b) six c) four d) nine

Output: a


Input: Consider Input: Water weighs about ____ pounds per gallon.\Question: Choose the right answer from options given a) seven b) ten c) zero d) nine

Output: b


Input: Consider Input: Trees can withstand extended drought, and up to ____ months of inundation.\Question: Choose the right answer from options given a) six b) three c) five d) four


Output: a