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: Some families have two daddies or ____ mommies.\Question: Choose the right answer from options given a) nine b) seven c) zero d) two

A: d
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Q: Female cats come into heat cycles every ____ to four weeks during certain times of the year.\Question: Choose the right answer from options given a) eight b) ten c) zero d) three

A: d
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Q: Ternary diagrams show the relative proportions of three variables on ____ axes.\Question: Choose the right answer from options given a) ten b) three c) seven d) one

A:
b
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