If an article is biased it shows

If an article is biased it shows its author's opinion on the topic they're writing about.

Explanation:

A bias can be defined as a tendency, inclination, feeling, or opinion, especially one that is not based on facts. We usually use this word in a negative context, when we want to say that someone is prejudiced against a certain person or group of people. For example, racial and gender biases are common occurrences even today.

If an article is biased, it reveals its author's opinion on the topic they're writing about. When we're writing an article, we should try to be as objective as possible. This means that we shouldn't let our beliefs, feelings, opinions, or assumptions influence the way we write. However, many don't succeed in this, which is why we can easily run into biased articles.

answer: a mother fears that the poor lighting poses a danger to the children who play there.