Jason and Mark Were Talking in Class, but So Was

Jason and Mark were talking in class, but so was everyone else. As they continued to discuss their day's adventures, it suddenly became clear to them that the teacher was staring at them. They didn't realize that the class had been called to order and what was once only one conversation among many was now disruptive. Jason apologized quickly and the teacher resumed her normal activities. This situation illustrates what important aspect of perception?

A) adaptation is a common problem among younger people
B) men have a different absolute threshold compared to women
C) a person's ability to detect a difference between two stimuli is absolute
D) a person's ability to detect a difference between two stimuli is relative
E) men's perceptual filters are underdeveloped compared to that of women's