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: China has about ____ in four of all smokers in the world.\Question: Choose the right answer from options given a) one b) seven c) ten d) six
Example Output: a

Example Input: Pods contain less than ____ animals, mainly females with calves and sexually immature males.\Question: Choose the right answer from options given a) zero b) six c) no d) ten
Example Output: d

Example Input: Women deserve to have more than twelve years between the ages of twenty ____ and forty.\Question: Choose the right answer from options given a) five b) eight c) four d) no
Example Output:
b