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]: Owls have ____ toes on each foot, like most birds.\Question: Choose the right answer from options given a) no b) seven c) four d) one
[EX A]: c

[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]: Millipedes have ____ pairs of legs per body segment.\Question: Choose the right answer from options given a) three b) one c) eight d) two
[EX A]:
d