19. One of the principles of psychophysics is that changes in the physical environment are not

19. One of the principles of psychophysics is that changes in the physical environment are not       always matched by equal changes perceptually. If Madison Wilson were creating a new drink,       what would psychophysics tell her?
a. She would need to research how the perception of “sweetness” changed by the amount    of sugar added. b. She would need to look at the subliminal aspects of “sweetness.” c. She could make the drink twice as sweet by adding twice the amount of sugar. d. She would need to create promotions to tell customers how “sweet” the new drink is.