What are prepositions

Prepositions indicate direction, time, location, and spatial relationships, as well as other abstract types of relationships.

Prepositions indicate relationships between other words in a sentence.

Many prepositions tell you where something is or when something happened.

As the name suggests they generally tell position if something. Like, behind, front, on, at etc.

the answer is d. books are banned from the library. this is an example of censorship because the library did not want people reading the content of those books. the library censored the books by banning them.