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: Vision problems affect one in ____ school-aged children.\Question: Choose the right answer from options given a) six b) four c) seven d) one

Answer: b


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

Answer: b


Question: All animals exhibit ____ common behavioral patterns in a stereotypical manner.\Question: Choose the right answer from options given a) seven b) ten c) two d) six

Answer:
d