a long speech by one actor in a play or movie, or as part of a theatrical or broadcast program

The answer is monologue.

Explanation:

A monologue is a long speech by one actor in a play or movie, or as part of a theatrical or broadcast program. MONO here means one.

In theatre, a monologue is a speech usually presented by a single character. It is most often to express their mental thoughts aloud often presented as though, the character is deep in thought to the point of voicing them or simply having a conversation with himself.

A monologue sometimes can also be used to directly address another character or even the audience.

dickinson punctuation and lines in her poems to establish a rhythm. each reader will naturally find themselves reading the poem in the same way. she uses the repeating question marks and exclamation points to convey the passion in her words. shelley uses punctuation to paint a picture in the reader's mind. for example, the ellipses after "stand in the dessert" evoke a silence, as it would feel in a deserted, old place.