Concept:A soliloquy is a dramatic device in which a character speaks alone on stage to reveal their inner thoughts.Explanation:• A solo speech delivered while the character is alone on stage is called a soliloquy.• An aside is a short comment to the audience, usually not heard by other characters.• An apostrophe is a speech addressing an absent person or an abstract idea.• A dialogue is a conversation between two or more characters.Answer:A. soliloquy