The correct answer is A. Usually has a happy ending
Step-by-step explanation:
Comedy is a genre of literature mainly characterized for being humorous and evoking happiness or laugh in the audience. Additionally, comedies aim at entertaining and in most cases, comedy stories have a happy ending in opposition to tragedies that have an unhappy ending. Besides this, as in most genres of literature, the story develops through different stages that include the exposition, the rising action, the climax, the falling action, and the resolution but different to other genres all of these stages include humor and other devices such as irony or satire. Considering this, it can be concluded the one that is a unique characteristic of comedy is that it usually has a happy ending.