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]: Fats come in ____ different forms saturated and unsaturated.\Question: Choose the right answer from options given a) no b) two c) six d) seven
[A]: b


[Q]: Neutrinos are particles with almost ____ mass and no electric charge.\Question: Choose the right answer from options given a) no b) two c) zero d) five
[A]: a


[Q]: Filarial parasites have an intriguing life cycle with ____ clear developmental stages.\Question: Choose the right answer from options given a) five b) ten c) eight d) nine
[A]:
a