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:
Rabbits reach sexual maturity between three and ____ months of age.\Question: Choose the right answer from options given a) three b) seven c) six d) zero

Ex Output:
c


Ex Input:
Respiratory therapists complete two to ____ years of education.\Question: Choose the right answer from options given a) no b) one c) four d) eight

Ex Output:
c


Ex Input:
Summer is the season of the midnight sun when it really never gets dark for almost ____ months.\Question: Choose the right answer from options given a) three b) six c) four d) two

Ex Output:

a