Why is Mercutio's strange "Queen Mab" Speech an example of a monologue?

Question 5 options:

Mercutio recites the speech while alone on stage - to the audience only.

Mercutio recites a long speech directly to Romeo.

Mercutio makes a brief statement to himself which informs the audience of his thoughts and feelings.

The correct answer is B.

The fact that Mercutio recites a long speech to another character is enough to make it an example of a monologue.

He does not have to be alone on stage - - that would make it a soliloquy. By contrast, a monologue is simply a long speech spoken by a single character who is not alone on stage.