Read this excerpt from an article titled “Dangerous ideas”: In most cases, books are challenged or banned because
they introduce ideas or topics some people would prefer
not to examine, or address issues that some find difficult
to think and talk about. For example, many people object
to books they consider to be obscene because they
oppose the use of swear words and vulgar language in the
book, or because ideas expressed in the book about race,
gender, social class, religion, or drugs don't align with their
values.
What is the author's purpose in this excerpt?
OA. To show that book banning has a long history
B. To show examples of reasons books have been banned
OC. To argue against the judgments of the American Library
Association
OD. To explain that local authorities are largely responsible for
censorship