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]: Most infected persons have ____ symptoms of disease.\Question: Choose the right answer from options given a) six b) no c) three d) one
[A]: b


[Q]: Big bluestem grows up to ____ feet tall.\Question: Choose the right answer from options given a) seven b) no c) nine d) eight
[A]: c


[Q]: Eggs are placed in ____ parallel lines on plants.\Question: Choose the right answer from options given a) no b) ten c) two d) one
[A]:
c