Music appreciation classical music is centered on ideals of                a.  balance and symmetry.      b.  a driving bass line.      c.  violent emotions.      d.  heavy ornamentation.

Classical music is centered on ideals of A. balance and symmetry.
Classicism aimed to replicate ancient Greek and Roman ideals. Obviously, they valued balance and symmetry, so those are the characteristics which can be found in Classicism as well, especially in painting and music.