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:
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

Ex Output:
a


Ex Input:
Argentine ants are able to establish new colonies with as little as ____ worker ants and one queen.\Question: Choose the right answer from options given a) no b) two c) ten d) five

Ex Output:
c


Ex Input:
Bees normally live for about thirty days, but infected bees survive for only three to ____ days.\Question: Choose the right answer from options given a) four b) five c) eight d) zero

Ex Output:

b