instruction:
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:
Respiratory therapists complete ____ to four years of education.\Question: Choose the right answer from options given a) one b) nine c) zero d) two
answer:
d


question:
Natural indium contains ____ isotopes.\Question: Choose the right answer from options given a) one b) eight c) two d) seven
answer:
c


question:
Nymphs pass through ____ stages before becoming adults.\Question: Choose the right answer from options given a) ten b) one c) four d) five
answer:

d