The alto clef places middle C on which line and is commonly used for which instrument?

• A. Treble clef
• B. Bass clef
• C. Alto clef
• D. Soprano clef

Answer: (C)

The alto clef is a C-clef that places middle C on the third line of the staff. This arrangement centers the notes around the viola’s comfortable reading range, reducing the need for many ledger lines. That alignment makes it the standard notation for viola, so players can read the instrument’s pitches more easily within five staff lines. Other clefs position middle C differently or use other tonal centers, which is why they’re used for other instruments, not the viola.