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: Hurricanes weaken rapidly when passing over land surfaces for ____ reasons.\Question: Choose the right answer from options given a) two b) three c) nine d) zero
Example Output: b

Example Input: Woodchucks produce about ____ young and virtually all females breed annually.\Question: Choose the right answer from options given a) ten b) four c) no d) six
Example Output: b

Example Input: Badgers walk on the soles of their feet much like bears, showing ____ toes in their footprints.\Question: Choose the right answer from options given a) eight b) two c) three d) five
Example Output:
d