Which term refers to the plot element that provides back ground information in a story

Hamlet act 1 what does polonius tell ophelia to do? why?

What is the effect of narrator's word choice on the tone of this passage? the words "my heart shrank within itself" create a fearful tone. the words "better-omened" set a hopeful tone. the words "wounded his fellow" develop a remorseful tone. the words "struck harsh upon my ears" suggest an irritated tone.

What idea-generating technique allows members to intentionally develop unconventional or outlandish ideas? brainstorming