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:
Bone marrow replenishes itself fully within ____ weeks.\Question: Choose the right answer from options given a) nine b) no c) one d) two
answer:
d


question:
Stable oxygen has eight protons and ____ neutrons.\Question: Choose the right answer from options given a) eight b) ten c) three d) zero
answer:
a


question:
Lizards require five to ____ feedings per week due to their high metabolic rates.\Question: Choose the right answer from options given a) seven b) six c) ten d) zero
answer:

a