Final answer:
The existence of afterimages supports the opponent-process theory of color vision, which suggests that color is coded in opponent pairs. When you stare at a color and then look at a neutral surface, the opponent-process theory explains why you see a negative afterimage in the complementary colors. Hence the correct answer is option B
Step-by-step explanation:
The existence of afterimages provides support for the opponent-process theory of color vision. This theory suggests that color is coded in opponent pairs, such as black-white, yellow-blue, and green-red. Afterimages occur when the ganglion cells in the retina respond to their "opponent" colors after being exposed to a specific color stimulus.
When you stare at a color for a prolonged period and then shift your gaze to a neutral surface, the opponent-process theory explains why you see a negative afterimage in the complementary colors to the original stimulus. For example, if you stare at a green image and then look at a white surface, you will see a red afterimage. This experience supports the opponent-process theory and demonstrates how our visual system processes color information.
Hence the correct answer is option B