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:
Perennial grass takes ____ to five years before it is mature enough to produce adequate seed.\Question: Choose the right answer from options given a) six b) zero c) three d) no

Ex Output:
c


Ex Input:
Distilled water enters the body with ____ minerals but leaves the body with minerals.\Question: Choose the right answer from options given a) zero b) no c) one d) nine

Ex Output:
b


Ex Input:
Cortisol acts by at least ____ different mechanisms.\Question: Choose the right answer from options given a) nine b) five c) zero d) two

Ex Output:

d