Plucking a string can cause that string to vibrate, and all guitars produce sound through the mechanical vibration of strings. Given these facts, how does a guitar create sound among the following options:
- electrically
 - mechanical
 - Amplifying it with electricity
 - The musician being trained
 - Tuning it properly
 - Plucking a string
 - Through play
 - lowered energy cost


 

      Plucking a string   