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: Electrolytic capacitors have a finite lifetime, usually about ____ years.\Question: Choose the right answer from options given a) zero b) ten c) four d) eight

Answer: b


Question: Toucanets encompass ____ genera.\Question: Choose the right answer from options given a) seven b) six c) two d) one

Answer: c


Question: Scientific understanding based on the experimental method has a history of only ____ hundred years.\Question: Choose the right answer from options given a) zero b) three c) two d) five

Answer:
b