Final answer:
The embouchure is the way a musician holds her mouth, tongue, and lips when playing an instrument with a mouthpiece. Option c is correct.
Step-by-step explanation:
The term being described is the embouchure. This term refers to the way a musician positions and uses their mouth, lips, and tongue when playing a wind or brass instrument.
A proper embouchure is essential for controlling the flow of air into the instrument, which in turn affects the sound, pitch, and tone quality produced. It involves the adjustment of facial muscles and the shape of the mouth to create a seal around the mouthpiece or reed.
For instance, brass players must create a buzz with their lips, whereas woodwind players need to position their lips and teeth in a certain way on the mouthpiece or reed to generate the desired sound.
Option c is correct.