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: Marriage is the legal union of ____ people.\Question: Choose the right answer from options given a) one b) no c) five d) two

A: d
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Q: All spider mites have ____ legs and a lack of a separate head.\Question: Choose the right answer from options given a) eight b) four c) ten d) one

A: a
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Q: Complementary opposites are ____ colours juxtaposed on the colour wheel.\Question: Choose the right answer from options given a) five b) three c) no d) two

A:
d
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