What is the most accurate identification of a secondary colour in the traditional pigment system?

Correct answer: A colour formed by mixing two primary colours

In the traditional subtractive pigment model taught in basic colour theory, a secondary colour is produced by mixing two primary pigments. The familiar examples are orange from red and yellow, green from yellow and blue, and violet or purple from blue and red, although exact results depend on the pigments used. Option A states the governing definition. Black and white alter value, natural origin is irrelevant, and a secondary colour is formed through mixing.