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').
--------
Question: 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

Answer: c


Question: Classes play ____ distinct roles in object-oriented programming.\Question: Choose the right answer from options given a) eight b) zero c) two d) no

Answer: c


Question: Modern technology makes it possible to examine and treat infants even under ____ months of age.\Question: Choose the right answer from options given a) two b) three c) nine d) six

Answer:
d