<span>A sudden change in the level of sound
Good luck! :D</span>
Answer:
Option "A" (the very first one) is an A Major scale.
Explanation:
A Major has three sharps in its key signature: F, C and G.
I suggest you learn your way around the key signatures, that way you'll be able to recognize any scale at any moment, it doesn't take long and it's very much worth the effort.
Green is the only true secondary color listed. The three main secondary colors are orange, purple, and green
I think it is C?
It is the area around,below or above an object.