If You Stare for 30 Seconds at a Red Object

question 4

Multiple Choice

If you stare for 30 seconds at a red object and then look at a blank sheet of white paper, you will see a greenish image of the object. This phenomenon BEST supports the ________ theory of color vision.

• A) Grieco trichromatic
• B) opponent-process
• C) Helmholtz trichromatic
• D) Hering's vibration
• E) Ponzo's

---

Definitions:

Slugs

Gastropod mollusks without shells or with very small internal shells, often found in moist environments.

Research

The systematic investigation into and study of materials and sources in order to establish facts and reach new conclusions.

Silence

The absence of any sound, often creating a context for reflection, meditation, or peace.

Cookie

A small, sweet baked treat, often made with flour, sugar, and butter, and sometimes containing chocolate chips, nuts, or other ingredients.