Exposition

[Rihanna]

The act of exposing or laying open; a setting out or
displaying to public view.

[Magaret]

Dialogue that gives the audience the background of the characters and the present situation.

Writing or speech intended to convey information or to explain, an explanation.

[Mark Zuckerberg]

When someone is getting [exposed], the [exposition] is the [information] being exposed.

[Michiko]

a clear and full explanation of an idea or theory:

[Britney]

A comprehensive description and explanation of an idea or theory.