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]: Ankle joint has ____ degrees of freedom.\Question: Choose the right answer from options given a) seven b) eight c) four d) three
[A]: d


[Q]: Brick chimneys hide a system that circulates air in and out of the building every ____ minutes.\Question: Choose the right answer from options given a) six b) seven c) eight d) two
[A]:
a