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: Rheumatic fever begins one to ____ weeks after an untreated streptococcal infection.\Question: Choose the right answer from options given a) six b) ten c) two d) zero

Answer: a


Question: Takins can even balance on their hind hooves to nibble on vegetation ____ feet above ground.\Question: Choose the right answer from options given a) two b) no c) nine d) eight

Answer: d


Question: Human rabies is extremely rare, and there have been ____ cases in Oregon in the last eight years.\Question: Choose the right answer from options given a) ten b) one c) no d) nine

Answer:
c