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]: Natural tellurium consists of ____ isotopes.\Question: Choose the right answer from options given a) six b) seven c) eight d) one
[EX A]: c

[EX Q]: Argentine ants are able to establish new colonies with as little as ____ worker ants and one queen.\Question: Choose the right answer from options given a) no b) two c) ten d) five
[EX A]: c

[EX Q]: Food is an important feature in all ____ dimensions of wellness.\Question: Choose the right answer from options given a) zero b) four c) eight d) six
[EX A]:
d