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').

[Q]: Reptiles also have scaly skin and a ____ chambered heart.\Question: Choose the right answer from options given a) zero b) one c) ten d) three
[A]: d


[Q]: Oar boats are smaller than motor boats and can accommodate four to ____ people.\Question: Choose the right answer from options given a) zero b) three c) five d) no
[A]: c


[Q]: Centipedes are highly susceptible to water loss for ____ reasons.\Question: Choose the right answer from options given a) two b) five c) three d) six
[A]:
a