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:
Black widows mature in ____ to four months.\Question: Choose the right answer from options given a) two b) seven c) eight d) zero

Ex Output:
a


Ex Input:
Control is defined as a dead plant with ____ signs of life.\Question: Choose the right answer from options given a) ten b) nine c) no d) zero

Ex Output:
c


Ex Input:
Some people have hay fever during all ____ seasons.\Question: Choose the right answer from options given a) three b) zero c) eight d) two

Ex Output:

a