What is the lowest note in the Viola range?

The lowest note in the viola range is C3. This note serves as the fundamental pitch that defines the deeper register of the instrument. Violas are tuned to C-G-D-A, with C being the lowest string pitch found on the instrument, which allows violists to produce rich, warm tones that are characteristic of the viola.

The other options represent notes that are higher in pitch and do not reflect the viola's overall range. E6 is significantly above the alto range, G3 is a higher note but not the lowest, and G4 is closer to the middle of the viola's range, which typically extends up to approximately E7 in higher pitches. Thus, C3 accurately identifies the lowest note available on the viola.