Which of the following prefixes signifies the color associated with oxygen-rich blood?

The prefix "erythro-" signifies the color red, which is associated with oxygen-rich blood. When oxygen binds to hemoglobin in red blood cells, it gives the blood a bright red color, which is often seen in arteries that carry oxygenated blood away from the heart to the tissues of the body. This understanding is fundamental in medical terminology when discussing blood and its functions.

The other prefixes refer to different colors or conditions: "leuk-" relates to white (as seen in leukocytes or white blood cells), "jaund-" connects to yellow, often associated with jaundice and liver conditions, and "viv-" relates to life but does not specifically denote a color. Therefore, "erythro-" is distinctly the prefix that accurately indicates the color of oxygen-rich blood.