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').

Example Input: Alcoholics are nearly ____ times more likely than others to die in motor vehicle crashes.\Question: Choose the right answer from options given a) ten b) eight c) six d) five
Example Output: d

Example Input: Poodles have ____ legs.\Question: Choose the right answer from options given a) one b) four c) six d) nine
Example Output: b

Example Input: Platelets have a short life-span of only ____ days.\Question: Choose the right answer from options given a) ten b) five c) nine d) no
Example Output:
b