Which of the following correctly defines tertiary colors?

Tertiary colors are indeed colors that are created by mixing a primary color with a secondary color. These colors typically appear between the primary and secondary colors on the color wheel. For example, mixing red (a primary color) and orange (a secondary color) results in red-orange, which is a tertiary color. This definition is important for understanding color theory and how colors relate to one another in various contexts such as art, design, and fashion.

The other options do not accurately define tertiary colors. For instance, while colors made from two primary colors refer to secondary colors, the notion of mixing equal amounts of any three colors does not align with the definition of tertiary colors and could lead to different results. Furthermore, the idea that colors are always neutral in tone does not apply to tertiary colors, as they can be quite vibrant and saturated. Understanding the correct structure of the color wheel and the relationships between colors is essential for anyone studying Family and Consumer Sciences, especially in fields that involve design and aesthetics.