What is dialogue?

Aa character making a long speech to one or more of the other characters
Ba character having a conversation with one or more of the other characters
Ca character speaking his or her thoughts aloud while alone on stage
Da character making a quick comment to the audience that other characters do not hear

Verified Answer :

Dialouge is b, a character having a conversation with one or more of the other characters.

A dialogue is b. a character having a conversation with one or more of the other characters.

Other definitions:

Aa character making a long speech to one or more of the other characters is a "monologue".
Ca character speaking his or her thoughts aloud while alone on stage is a "soliloquy".
Da character making a quick comment to the audience that other characters do not hear is an "aside".