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').
--------
Question: Orangutans spend up to ____ hours a day eating or foraging for food.\Question: Choose the right answer from options given a) seven b) nine c) three d) six

Answer: d


Question: Parapsychologists have ____ basic approaches to their subject matter.\Question: Choose the right answer from options given a) three b) two c) ten d) five

Answer: b


Question: Salt takes ____ days to start to develop, and can keep growing for about a week.\Question: Choose the right answer from options given a) four b) two c) three d) five

Answer:
c