In music, form is based on: select one:
a. repetition
b. contrast
c. variation
d. any or all of the above

the correct answer for this question is:

it is system invented in 1872 that produced the first illusion of movement. basically it was a disk with a series of drawings around the edge, showing the same object in slightly different poses. when it was spun, it created the illusion of movement.

found this online : )

answer; rhetoric;

the answer is b. false. a fugue is a traditional form of a composition in where a part would enter after the other and uses the same theme. the music would then grow constantly in size as well as in intensity.