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]: Nymphs emerge in ____ to seven days and flatten themselves against the leaf to feed.\Question: Choose the right answer from options given a) one b) five c) nine d) two
[EX A]: b

[EX Q]: Hybridization is the practice of ____ different species interbreeding.\Question: Choose the right answer from options given a) no b) one c) two d) three
[EX A]: c

[EX Q]: Indian reservations are part of ____ of the nation's ten poorest counties.\Question: Choose the right answer from options given a) four b) one c) six d) five
[EX A]:
d