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').

Some European countries require ____ years of education.\Question: Choose the right answer from options given a) no b) nine c) six d) three
d

Rabbits reach sexual maturity between three and ____ months of age.\Question: Choose the right answer from options given a) three b) seven c) six d) zero
c

Blood pressure is recorded as ____ numbers.\Question: Choose the right answer from options given a) two b) no c) three d) five

a