Sascha is in a marching band. because the band members move together identically, the audience perceives waves of motion. sascha's band director has used the gestalt principle of to cause the audience to perceive the waves of motion.

Common fate

Explanation:

The gestalt principle of common fate explains that objects moving in the same direction with a similar speed range, are observed as being part of one body.

Sascha's band director is making use of the gestalt principle of common fate to give the audience an illusion of waves of motion from the movement of the band members.

answer; /// i believe the correct answer is (all of the above);

answerembargo;