Answer the question and you'll get brainilest!

im just gonna explain how a speaker works and how it can make a window move. So a speaker has a crystal in it that when hit with and electric charge moves like a diaphragm that makes sound waves. the more electricity the slower it moves yet the slower it moves the bigger the movement. Anyway when that crystal moves it also moves the cardboard pice in front of it making a louder sound. The best way to think about it is a sound wave is like wind, its just moving air. so that moving air can push and pull something like a window pane. Cool Huh?

Explanation:

the correct answer is answer a. a mixture

no other options make sense

hope this

have a great day : )

  - sprinkles