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 Q]: Unequal cleavage can occur in ____ ways.\Question: Choose the right answer from options given a) two b) seven c) three d) ten
[EX A]: a

[EX Q]: Coffee trees reach maturity between ____ and four years when their clusters of fruit turn deep red.\Question: Choose the right answer from options given a) no b) three c) nine d) five
[EX A]: b

[EX Q]: Sweet potatoes have an enormous genome, containing ____ copies of each chromosome.\Question: Choose the right answer from options given a) seven b) five c) nine d) six
[EX A]:
d