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: All baleen whales have ____ blow holes.\Question: Choose the right answer from options given a) zero b) four c) seven d) two
Example Output: d

Example Input: Cloves Chew ____ whole cloves.\Question: Choose the right answer from options given a) three b) four c) six d) five
Example Output: d

Example Input: Goats are ____ legged animals.\Question: Choose the right answer from options given a) two b) five c) six d) four
Example Output:
d