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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Definitions:

Amniotic Fluid

The protective liquid contained within the amniotic sac that surrounds and cushions the fetus during pregnancy.

Carbon Dioxide

This odorless, color-free gas is produced during the combustion of organic compounds and carbon, as well as through respiration, and it's consumed by plants in their photosynthesis process.

Chorion

The outermost membrane surrounding an embryo in mammals, birds, and reptiles, contributing to the formation of the placenta in mammals.

Allantois

An extraembryonic membrane of reptiles, birds, and mammals that stores the embryo’s nitrogenous wastes; most of the allantois is detached at hatching or birth.