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: Young emus are very vulnerable to disease until they are about ____ months old.\Question: Choose the right answer from options given a) no b) ten c) six d) three
Example Output: d

Example Input: Grasshoppers are ____ inches long and can knock a man off a bicycle.\Question: Choose the right answer from options given a) six b) ten c) four d) eight
Example Output: a

Example Input: Misdemeanours are less serious offences which can lead to imprisonment for up to ____ months.\Question: Choose the right answer from options given a) four b) seven c) three d) eight
Example Output:
c