What is the primary role of ganglion cells in the retina related to the perception of color, as proposed by the Opponent-Process Theory?

• A. They transmit visual information from the eyes to the brain.
• B. They adjust the size of the pupil to regulate light entry.
• C. They process color information by encoding the contrasts between pairs of colors.
• D. They convert sound waves into electrical signals for the brain to process.

Answer: (C)