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').

Ex Input:
Evolution is dependent on ____ forces.\Question: Choose the right answer from options given a) no b) five c) two d) seven

Ex Output:
c


Ex Input:
Ants have ____ distinct body parts.\Question: Choose the right answer from options given a) nine b) zero c) no d) three

Ex Output:
d


Ex Input:
Soccer is a sport that runs all year round with ____ days of practice for three hours each day.\Question: Choose the right answer from options given a) five b) three c) seven d) eight

Ex Output:

b