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: Conflict occurs between when ____ people have a car accident.\Question: Choose the right answer from options given a) no b) eight c) two d) nine
Example Output: c

Example Input: Water is present in all ____ phases in Earth s atmosphere.\Question: Choose the right answer from options given a) six b) nine c) two d) three
Example Output: d

Example Input: Most Gerbils become sexually mature by the age of ____ months old.\Question: Choose the right answer from options given a) nine b) one c) four d) three
Example Output:
d