Answer:
To show that an argument is reasonable or sound.
Explanation:
It’s the quality and and value of the content of the books some are to be swallowed and tasted
To provide an example for why a book was banned.
C is correct i believe. its not A because that could not be a sentance byitself, not b because im sure you know why and d might be but then the teacher would be trying to explain to you something other then the rules of punctuation