Bass and soprano registers are aspects of

a. meter.
b. rhythmic values.
c. amplitude.
d. pitch.

D is correct. A pitch is a tone of voice or instrument. Hope this helps!

D. Pitch because singers sing in differs pitches and keys

Answer nationalistic music;

The theme of social protest remained a consistent focus for jacob lawrence throughout his career. in the 1960s lawrence was inspired by news reports and photographs, including images of segregated lunch counter sit-ins and stories of the   freedom riders in the civil rights movement. from the 1970s onward, lawrence's work focused less explicitly on contemporary social issues.