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]: Hamsters can live to be three to ____ years old.\Question: Choose the right answer from options given a) four b) two c) three d) nine
[EX A]: a

[EX Q]: Kabbalists group the simple letters into ____ triplets.\Question: Choose the right answer from options given a) four b) no c) ten d) three
[EX A]: a

[EX Q]: All insects have six legs and ____ unique body sections.\Question: Choose the right answer from options given a) three b) seven c) no d) eight
[EX A]:
a