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:
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:
Calves can browse and follow their mother at three weeks old and are weaned at ____ months.\Question: Choose the right answer from options given a) five b) seven c) four d) three
answer:
a


question:
Redness persists for an unpredictable length of time, varying from ____ weeks to four months.\Question: Choose the right answer from options given a) seven b) eight c) three d) six
answer:

c