What type of instrument produces sound by the vibration of metal, wood, or other material tongues?

The correct answer is a lamellaphone, which is a type of musical instrument that creates sound through the vibration of metal or wooden tongues. In a lamellaphone, these tongues are typically attached to a resonating body, and when the player plucks them, they vibrate and produce sound. This categorization reflects a specific mechanism of sound production that distinguishes lamellaphones from other instruments.

The harmonica, on the other hand, also produces sound through vibrating reeds, which could make it seem similar; however, it is primarily classified as a free reed instrument. The xylophone produces sound through the vibration of wooden bars struck by mallets, which differs fundamentally from the tongue mechanism of lamellaphones. Lastly, the saxophone is a woodwind instrument that generates sound through the vibration of a single reed, which is not related to the tongue mechanism characteristic of lamellaphones.