The correct answer is (B) A long speech (by one person); a soliloquy, a long discourse by a single performer or actor. A scene in a drama in which one person speaks by himself to the audience. Also, any written composition, including poetry, in which one person speaks.

Monologue comes from French monologue, Greek monologos (speaking alone) (monos [single] and logos [discourse]).

Examples of use:

• It took dedication and perseverance to learn the 30-minute monologue.
• Many of her poems take the form of monologues.