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:
Earthworms have ____ pairs of hearts.\Question: Choose the right answer from options given a) seven b) five c) one d) no
answer:
b


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


question:
Interstate commerce is commerce conducted in at least ____ states.\Question: Choose the right answer from options given a) no b) ten c) six d) two
answer:

d