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').

Mares normally give birth to their first foal when they are between three and ____ years of.\Question: Choose the right answer from options given a) ten b) no c) six d) four
c

Grasshoppers are ____ inches long and can knock a man off a bicycle.\Question: Choose the right answer from options given a) six b) ten c) four d) eight
a

Grapes have ____ primary acids tartic and malic.\Question: Choose the right answer from options given a) one b) four c) two d) seven

c