How is unity created in a musical composition?A) RepetitionB) ModulationC) Simple chordal accompanimentD) Symmetrical form

What will be an ideal response?

A, D
Unity is created through the use of repetition. A symmetrical form, such as ternary form, features repetition of a whole section. Modulation is a way to increase variety in a work. Accompaniment, in whatever form, does not necessarily create unity or variety.