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:
Tetrapods are animals that have ____ legs or leg-like appendages.\Question: Choose the right answer from options given a) four b) one c) ten d) six
answer:
a

question:
Many scientists believe the neutrino has ____ mass at all.\Question: Choose the right answer from options given a) eight b) zero c) two d) no
answer:
d

question:
Primary residence is defined as the home where an individual lives more than ____ months of the year.\Question: Choose the right answer from options given a) three b) zero c) six d) nine
answer:
c