A key signature is most helpful in determining _____ a piece of music.

A) tonality of
B) the scale used to compose
C)meter pattern for
D) a and b
E) none of the above

Respuesta :

c. it has to be c or d.
Hi there!

The answer is D. 

The key signature of a piece of music is helpful in determining the tonality and scale key of the piece. 

Hope this helps!