Answer:
Talking louder
Explanation:
The deaf cant hear. Many people think if they can speak louder or closer to them they can hear. That is not the case.
I believe the corret answer is shock.
Especially in the days before audio recording and playback, music was often written out as a means of preserving and communicating it. To do this, a system of notation was developed that gives musicians the information they need to play music as the composer intended it.
(Hope it helps :) )