Which option is a characteristic of an unreliable narrator?

Deceives others, whether intentionally or unintentionally.

Explanation:

An unreliable narrator is one that cannot be trusted to tell the truth. This is a common feature in literature. When an unreliable narrator tells a story, we cannot be sure how much of it is true and how much should be taken as a lie. Therefore, this makes it difficult for the reader to know what is really happening in a story. An unreliable narrator, therefore, is deceitful, whether intentionally or not.

the reason some people sacrifice their own life for another person's life could be that they are in love with them and would do anything to keep them safe a protected even if that means risking their life in the process