Blowing air into a whistle causes air to vibrate inside the whistle.
Air, too, contains oxygen.
Blowing oxygen into a whistle causes oxygen to vibrate inside the whistle.
If you blow oxygen inside of a whistle, what will vibrate inside of the whistle?
Options:
(A) an object
(B) friction
(C) energy
(D) waves
(E) heat
(F) oxygen
(G) a chime
(H) sound