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: Matter exists in ____ forms, solid, fluid and plasma.\Question: Choose the right answer from options given a) ten b) nine c) three d) five

A: c
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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

A: c
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Q: Snakeheads can breathe air and can survive out of water for up to ____ days.\Question: Choose the right answer from options given a) seven b) nine c) eight d) four

A:
d
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