Answer:
c. Idiophone
Step-by-step explanation:
Musical instruments are classified into different kinds. The "kulintang gamelan" and "ching" are classified as "Idiophones." This kind of instrument produces a sound when it vibrates. Such vibration occurs when the instrument is struck by fingers, hands, or other things. It may also vibrate by simply shaking it. These instruments are made of of different materials (wood, glass, metal, etc.)
The Kulintang Gamelan uses mallets/sticks while the Ching uses the fingers.