Answer:
B) Types of musical instruments
Explanation:
Membranophones: These are musical instruments that produce sound primarily by way of a vibrating stretched membrane. Think of drums; when you hit the drum's surface (the membrane), it vibrates and produces sound.
Chordophones: These are instruments that produce sound by way of a vibrating string or strings stretched between two points. Guitars, violins, and harps are good examples. When you pluck or bow a string, it vibrates and creates sound.
Idiophones: These instruments produce sound from the material of the instrument itself, being struck, shaken, or scraped. Examples include xylophones and cymbals. Unlike drums or guitars, the sound comes directly from the material (wood, metal, etc.) of the instrument itself.