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]: Diploid cultivars have ____ alleles.\Question: Choose the right answer from options given a) eight b) six c) two d) five
[A]: c


[Q]: Vaccination typically occurs at ____ to eight weeks of age in kittens.\Question: Choose the right answer from options given a) three b) nine c) six d) no
[A]: c


[Q]: Blood accumulates in ____ cylindrical spongy sinuses that run lengthwise through the penis.\Question: Choose the right answer from options given a) no b) three c) one d) eight
[A]:
b