Option d. Damage to the primary visual cortex results in functional blindness.
Explanation:
The primary visual cortex is a specialized visual area of the brain. It is located in the posterior lobe of the occipital lobe. It is the simplest and most accessible area of the cortical visual area. The region caries a highly specialized processing center for static and moving objects. The damage to the region causes blindness only to the region that is responsible visual field that focuses on a particular hemisphere. Thus, d is the correct answer.
