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]: Cleavage occurs typically in either one, two, three, four, or ____ directions.\Question: Choose the right answer from options given a) six b) three c) ten d) two
[A]: a


[Q]: Obesity is, in general, the result of personal choices and poses ____ risk of communication.\Question: Choose the right answer from options given a) four b) six c) zero d) seven
[A]: c


[Q]: Scientists think that there are really ____ different shapes of snow crystals.\Question: Choose the right answer from options given a) six b) four c) three d) nine
[A]:
b