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]: Corms are undifferentiated, uniform, and contain ____ rings when cut apart.\Question: Choose the right answer from options given a) no b) three c) one d) zero
[A]: a


[Q]: Shamrocks can be ____ of four leafs.\Question: Choose the right answer from options given a) six b) seven c) zero d) three
[A]: d


[Q]: Bandicoots have at least ____ distinct vocalisations.\Question: Choose the right answer from options given a) eight b) four c) ten d) five
[A]:
b