Which instrument has a range from C2 to C6?

The instrument that typically has a range from C2 to C6 is the cello. This string instrument is known for its distinctive rich tone and wide range. The cello's pitch range begins at C2, which is the second C below middle C, and extends all the way up to C6, which is two octaves above middle C. This range allows the cello to play both bass lines and melody parts across various musical genres.

In contrast, the tuba has a much lower range, primarily falling within the bass register, typically from around D1 to F4. The double bass also has a lower range, usually from E1 to E4, which means it does not reach the higher pitches associated with the cello. The viola, while higher than the cello, generally ranges from C3 to E6, which does not encompass the full lower range that starts from C2. Thus, the cello's established range distinctly identifies it as the correct answer among the listed instruments.