Question

What does the following definition describe?

“an author’s perspectives on an issue or topic”


bias
fact
objectivity
opinion

Answer 1

The description of "an author’s perspectives on an issue or topic” mostly describes opinion, which is slightly different than bias in that it doesn't necessarily have to be ingrained in the author's mind. 

Answer 2

The answer is "opinion".

Author's perspective is the concrete, particular, and subjective point of view that a person has about a particular subject or topic that is, opinion.