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').
--------
Question: Clover leaves with ____ to nine leaflets, illustrating a tendency to mutate.\Question: Choose the right answer from options given a) three b) zero c) ten d) five

Answer: a


Question: Earthworms have ____ pairs of hearts.\Question: Choose the right answer from options given a) seven b) five c) one d) no

Answer: b


Question: Mitochondrial function depends upon the coordinate action of ____ genomes.\Question: Choose the right answer from options given a) three b) nine c) two d) eight

Answer:
c