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]: Double price is based on two golfers sharing ____ room.\Question: Choose the right answer from options given a) one b) zero c) six d) nine
[A]: a


[Q]: Female cats have ____ X's in each cell.\Question: Choose the right answer from options given a) five b) two c) one d) ten
[A]: b


[Q]: Most beaver dams are less than ____ feet high.\Question: Choose the right answer from options given a) six b) no c) four d) one
[A]:
c