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: 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: Gasoline is ____ times as expensive as in the United States.\Question: Choose the right answer from options given a) two b) four c) three d) ten

Answer: c


Question: Rabbits can live to be around ____ years old or older.\Question: Choose the right answer from options given a) ten b) three c) six d) five

Answer:
a