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').

[Q]: Dicots have ____ seeds leaves, whereas monocots have only one.\Question: Choose the right answer from options given a) four b) one c) seven d) two
[A]: d


[Q]: Motor neurons are divided into ____ groups.\Question: Choose the right answer from options given a) two b) six c) seven d) eight
[A]: a


[Q]: Sexual maturity is thought to be attained in about ____ years.\Question: Choose the right answer from options given a) three b) zero c) two d) eight
[A]:
d