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').
--------
Question: Astronomers fall in ____ classes - professionals and amateurs.\Question: Choose the right answer from options given a) two b) four c) six d) zero

Answer: a


Question: Poodles have ____ legs.\Question: Choose the right answer from options given a) one b) four c) six d) nine

Answer: b


Question: Smoking causes nearly one in ____ U.S. deaths.\Question: Choose the right answer from options given a) three b) five c) zero d) no

Answer:
b