Answer:
i think it D sorry if i wrong because it source from history
Explanation:
Answer: Perceptual adaptation
Explanation: Since Stefan was involved in an experiment concerning the study of vision and the wearing of glasses that invert his vision, it took some time to perform a perceptual adaptation. Perceptual adaptation is, in fact, the means by which the brain perceives differences, most often as in this case in the field of vision, which Stefan witnessed.
The answer is cultural unity
