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]: Some infected people have ____ symptoms at all.\Question: Choose the right answer from options given a) four b) eight c) no d) five
[A]: c


[Q]: Clover leaves with ____ to nine leaflets, illustrating a tendency to mutate.\Question: Choose the right answer from options given a) three b) zero c) ten d) five
[A]: a


[Q]: Corms are ready to dig in ____ to six weeks after blooms are finished or when the tops die off.\Question: Choose the right answer from options given a) one b) four c) no d) nine
[A]:
b