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').

Female cats come into heat cycles every ____ to four weeks during certain times of the year.\Question: Choose the right answer from options given a) eight b) ten c) zero d) three
d

Ales actively ferment with yeast for two to ____ days.\Question: Choose the right answer from options given a) five b) nine c) three d) six
c

Unconsciousness can take place within ____ to two minutes.\Question: Choose the right answer from options given a) one b) zero c) four d) two

a