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: Most families have between ____ and eight children.\Question: Choose the right answer from options given a) four b) one c) five d) three
Example Output: c

Example Input: Amelia Island is the only territory in American history to serve under ____ flags.\Question: Choose the right answer from options given a) eight b) no c) six d) five
Example Output: a

Example Input: King crab spends ____ to three months in larval stages.\Question: Choose the right answer from options given a) ten b) nine c) two d) seven
Example Output:
c