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').

Most women take about ____ weeks to stop bleeding and to heal inside.\Question: Choose the right answer from options given a) two b) no c) four d) zero
c

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
d

Some snakes can go as long as ____ months without a good meal.\Question: Choose the right answer from options given a) zero b) eight c) six d) three

c