In a play about a famous musician, the main character paces the stage and
talks about how musical notes come alive for her when she plays a song.
which literary term best describes her speech in such a scene?
a. stage directions
b. implicit theme
c. dialogue
d. soliloquy

Soliloquy is the best literary term that describes the scene.

Explanation:

Soliloquy is used as a tool to deliver the one's own thoughts in a loud manner by himself  by a character in a play.It is often used in drama. In this type even though the other characters are present they keep silent when other member is speaking .It is used by a character when it speaks to itself, about the thoughts and feelings and also shares them with the audiences.