Final answer:
Bias is a positive or negative opinion that influences how an author presents a subject.
Step-by-step explanation:
The term that describes a positive or negative opinion that influences how an author presents a subject is bias. Bias can impact how information is presented, leading to a one-sided or skewed viewpoint. For example, if an author has a bias against a particular political party, they may present information in a way that supports their negative opinion of that party.
Learn more about Bias in writing