The answer is option D: Usually features an extraordinary hero.
In Comedy, the main characters are usually everyday people who face conflicts and in the end, they overcome them. Unlike the genre of Tragedy, which is characterized for featuring tragic heroes, who usually have extraordinary virtues (E.g. Super strength, courage, perfect life, loved by everyone, etc.) but who also has a big flaw or weakness, which leads the character to its downfall.
The most essential part of a persuasive essay is to convince the reader of whatever topic u are discussing. If you are talking about the literal part of the essay, the most important part is the evidence and the claim