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:
Roundworms are fairly large worms that can grow to be ____ or five inches long.\Question: Choose the right answer from options given a) no b) nine c) four d) zero

Ex Output:
c


Ex Input:
Japan is the second largest single country importer with about ____ per cent of world oat imports.\Question: Choose the right answer from options given a) five b) one c) four d) eight

Ex Output:
a


Ex Input:
Heat exchange is the composite of ____ mechanisms in which the body can gain, lose or both.\Question: Choose the right answer from options given a) six b) four c) ten d) zero

Ex Output:

b