Which of the Following Describes Weber's Law

Multiple Choice

Which of the following describes Weber's law?

A) What an individual sees and hears is completely dependent on her or his perception and desire.
B) The texture of a surface becomes more tightly packed together and dense as the surface moves to the background.
C) Muscles control the shape of the eye's lens to adjust to viewing objects at different distances.
D) The size of a just noticeable difference in stimuli perception is a constant fraction of the intensity of the stimulus.