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:
Antibodies contain ____ pairs of protein chains.\Question: Choose the right answer from options given a) no b) two c) nine d) zero
answer:
b


question:
Redwoods reproduce ____ ways.\Question: Choose the right answer from options given a) zero b) two c) six d) nine
answer:
b


question:
Burrows can be up to ____ feet deep, and are often found hundreds of feet from the water's edge.\Question: Choose the right answer from options given a) seven b) zero c) eight d) four
answer:

d