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').

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

[EX Q]: Cows have four stomachs, and the first ____ yield merchantable tripe.\Question: Choose the right answer from options given a) two b) five c) zero d) three
[EX A]: d

[EX Q]: Domestic violence affects at least one out of every ____ U.S. families.\Question: Choose the right answer from options given a) no b) four c) seven d) two
[EX A]:
b