The cleansing or purifying of audience emotions is a soliloquy an aside a dialogue a catharsis a chorus a prologue

A Catharsis.

Explanation:

Catharsis by definition is: "the process of releasing, and thereby providing relief from, strong or repressed emotions". It comes from the Greek word: Katharsis, which pretty much means the same, but when the process happens through some sort of art as a play or poetry.

greet them:

buenas noches.

that is considered night time which is when "good night" is used.

answer: common sense was the pamphlet that thomas paine used to convince reluctant americans to abandon the goal of reconciling with britain and to accept that independence was the only option to preserve their liberty.