Steven Was Born with Cataracts

Multiple Choice

Steven was born with cataracts.As a child,his vision was so bad that he was considered legally blind.As an adult,he had a surgical procedure to remove the cataracts.However,the physicians have explained to Steven that he will never achieve normal vision.This demonstrates

A) the maturation of vision.
B) the process of visual development.
C) how cognition is related to visual perception.
D) a critical period for vision.