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: Cooked meat freezes well for up to ____ months.\Question: Choose the right answer from options given a) four b) three c) eight d) five
Example Output: b

Example Input: TriMetal Irons Discover the benefits of ____ different metals.\Question: Choose the right answer from options given a) five b) seven c) no d) three
Example Output: d

Example Input: Paganism is the belief in ____ or more Gods.\Question: Choose the right answer from options given a) two b) one c) zero d) six
Example Output:
a