Which of these statements is trueAll percussion instruments can be tuned.The idiophones include such as the snare drum and kettledrum.Tuning an instrument means to set it a certain pitch?

All of the above statements are false.

* Not all percussion instruments can be tuned. For example, cymbals and triangles cannot be tuned.

* Idiophones are a type of percussion instrument that includes instruments that vibrate when struck, such as xylophones, marimbas, and vibraphones. Snare drums and kettledrums are not idiophones. Snare drums are membranophones, and kettledrums are kettledrums.

* Tuning an instrument does not necessarily mean setting it a certain pitch. Tuning can also involve adjusting the intonation, timbre, or other aspects of the sound.