What is the best explanation of how the setting helps to reveal the theme?

The setting is the time and place where the piece is set. It is the culture and society that shapes the story. The setting is important to the theme because some settings are better fitted to certain themes. The setting conveys a sense of atmosphere, which helps convey the more implicit elements of a theme.

Explanation:

dramatic irony occurs when the reader/audience knows more about a character's situation than the character does. the one main effect is that it gives the reader a sense of superiority, or detached superiority. the reader not only seemingly discovers what is revealed, but feels superior for doing so.

type of error:

the error in the sentence is a "dangling modifier". a dangling modifier is a phrase, word or clause that "dangles" because there is not target to modify. in this case, "after mopping the floor" is the dangling modifier since it has no word to modify. the noun "house" cannot mop the floor; therefore there is a mistake in the writing of the sentence.