Tertiary colors are a. Hues are created by combining equal parts of two primary colors. b. Hues that are directly opposite one another on the color wheel. c. Hues made by combining one primary hue and one secondary hue. d. Hues next to one another on the color wheel.

C. Hues are made by combining one primary hue and one secondary hue.

Explanation:

A tertiary colour is made by mixing equal amounts of a primary colour and a secondary colour. There are six tertiary colours. On the colour wheel, they sit between the primary and secondary colour they are mixed from.