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: Eastern cottontails have ____ different fur coats each year.\Question: Choose the right answer from options given a) five b) two c) eight d) six

A: b
****
Q: Ants have ____ distinct body parts.\Question: Choose the right answer from options given a) nine b) zero c) no d) three

A: d
****
Q: Heaves is more likely to appear in horses older than ____ years.\Question: Choose the right answer from options given a) three b) two c) eight d) nine

A:
d
****