Using an excitable and unreliable narrator in "the tell-tale heart” allows edgar allan poe to

Explore human psychology.

Explanation:

In this case, Edgar Allan Poe want to depict a situation in which he himself do not want to be. That is to say, he is telling a story that he may have lived but the story is written from other perspective in which he is no involved. This "tool" of the language is useful because it allows to explore human nature and emotions.

1. active

2. passive

3. passive

4. active

i have a basic answer but if you want a more in depth