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').
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Question: Sexual reproduction involves ____ individual organisms.\Question: Choose the right answer from options given a) six b) no c) two d) nine

Answer: c


Question: Cows breed at ____ years, bulls at four.\Question: Choose the right answer from options given a) two b) three c) seven d) one

Answer: b


Question: Some devices have monochrome screens that display images in ____ shades of gray.\Question: Choose the right answer from options given a) four b) six c) one d) seven

Answer:
a