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').

[EX Q]: Hydra has ____ distinct methods of reproduction, asexual and sexual.\Question: Choose the right answer from options given a) two b) zero c) no d) ten
[EX A]: a

[EX Q]: Giraffes sleep less than ____ hours a day.\Question: Choose the right answer from options given a) two b) six c) seven d) ten
[EX A]: a

[EX Q]: Heart disease effects ____ in three women.\Question: Choose the right answer from options given a) no b) one c) ten d) two
[EX A]:
b