When we say bias, this is when someone only sides to a single opinion without considering the other. In this case, the statement that supports what an author bias is is statement D. It is a prejudice which is in favor or against something. Bias is not looking on both sides of the situation before judging.
Just create a question that supports evidence from the text such as, where did graciella get the radio jammer?
He snorted coke with bellushi.
The correct answer is d. Incorrectly suggesting that one thing caused another.
Post Hoc is a type of a logical fallacy used in arguments where a person incorrectly suggests that one thing caused another while it may not be or is not the case.