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]: Phytochemicals are non-nutritive substances, in that they contain ____ vitamins or minerals.\Question: Choose the right answer from options given a) four b) one c) no d) ten
[EX A]: c

[EX Q]: Black widows mature in ____ to four months.\Question: Choose the right answer from options given a) two b) seven c) eight d) zero
[EX A]: a

[EX Q]: Composite materials combine ____ or more materials.\Question: Choose the right answer from options given a) zero b) no c) two d) one
[EX A]:
c