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]: Most people require roughly seven to ____ hours of sleep a night to stay alert through the day.\Question: Choose the right answer from options given a) eight b) ten c) one d) five
[EX A]: a

[EX Q]: Minks travel more than most furbearers, covering up to ____ miles a night.\Question: Choose the right answer from options given a) four b) five c) zero d) ten
[EX A]: d

[EX Q]: Crustaceans have ____ major body parts.\Question: Choose the right answer from options given a) three b) seven c) nine d) two
[EX A]:
a