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: Spores have ____ combinations of sexes.\Question: Choose the right answer from options given a) four b) five c) seven d) three

A: a
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Q: Conflict diamonds account for less than ____ per cent of world trade in rough diamonds.\Question: Choose the right answer from options given a) two b) four c) one d) ten

A: b
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Q: Cognitive therapy is a time-limited treatment lasting three to ____ months.\Question: Choose the right answer from options given a) four b) one c) ten d) eight

A:
a
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