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]: Democracy is ____ wolves and one sheep voting on what to have for supper.\Question: Choose the right answer from options given a) ten b) three c) zero d) one
[EX A]: b

[EX Q]: Sexual reproduction involves ____ individual organisms.\Question: Choose the right answer from options given a) six b) no c) two d) nine
[EX A]: c

[EX Q]: Liberation day is a public holiday once every ____ years.\Question: Choose the right answer from options given a) three b) four c) five d) seven
[EX A]:
c