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: Cleavage is perfect in ____ directions, prismatic.\Question: Choose the right answer from options given a) two b) nine c) three d) seven

Answer: a


Question: Perennial grass takes three to ____ years before it is mature enough to produce adequate seed.\Question: Choose the right answer from options given a) five b) seven c) six d) four

Answer: a


Question: Mature trees give shelter with ____ natural swimming holes safe for the young.\Question: Choose the right answer from options given a) one b) three c) zero d) seven

Answer:
b