To identify which symbol represents an accent in music notation, we typically look for a mark that indicates a stressed or emphasized note. An accent is usually represented by a symbol that looks like a greater than sign (>) or sometimes a small wedge or triangular mark above or below the note.
Since there are no images provided here, if the options given include a symbol resembling a greater than sign or a small wedge, that would be the one representing an accent. The letters T and R shown above a note do not typically represent an accent; they might stand for other musical terms.
If you can describe the images or symbols more explicitly, I'd be happy to help further!