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]: Cats have ____ sets of vocal cords.\Question: Choose the right answer from options given a) zero b) nine c) two d) three
[A]: c


[Q]: Cattle are the second most important commodity in ____ states and third in six states.\Question: Choose the right answer from options given a) nine b) five c) no d) eight
[A]: a


[Q]: Watercraft fall into ____ categories, lighterage and floating utility.\Question: Choose the right answer from options given a) seven b) one c) two d) three
[A]:
c