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: Every person is a carrier for about ____ rare genetic conditions.\Question: Choose the right answer from options given a) nine b) ten c) six d) three
Example Output: b

Example Input: Grasshoppers can fly at speeds up to ____ miles per hour.\Question: Choose the right answer from options given a) eight b) seven c) two d) nine
Example Output: a

Example Input: Loons can dive ____ hundred feet deep.\Question: Choose the right answer from options given a) seven b) two c) one d) nine
Example Output:
b