For that one it has to be B.)The heart of the army
C. they pass light through a diffusing material in the front
Secondary colour is when you mix two primary colour together (red,blue and yellow)
for instance, purple is a secondary colour because red and blue is purple!
Vibrato. It’s the same in vocals, changing pitch quickly in a way that sort of sounds like a vibration, though the technique itself is not called vibration.
