Which Observation Constituted Evidence for the Process of Opponent Color

question 1

Multiple Choice

Which observation constituted evidence for the process of opponent color representation?

• A) Colors observed in the afterimages are the other member of the opponent color pairs.
• B) Colors often appear to be mixtures of two opponent colors but never appear to be mixtures of two nonopponent colors.
• C) People sort a stack of differently colored cards into three piles-red, green, and blue.
• D) Ewald Hering discovered a fourth cone type (for yellow wavelength) using retinal densitometry.

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