Name the primary colors. why are these colors considered the only “primary colors”?

Red, yellow, blue; these colors are considered the only primary colors because if you combine them together, they make other colors. Rate! Red, yellow, and blue are the primary colors. Each make up every color and no other color can create them.

for those of you who searched "which list includes four types of animal-like protists? " and keep getting these results, the answer is c: flagellates, sarcodines, ciliates, parasites