What does knowledge of primary colours first help a student understand?

Correct answer: Colour creation and mixing

The governing concept is that primary colours provide the starting point for basic colour theory. A student first learns that combinations of the traditional primary paints—red, yellow, and blue—can produce secondary and other mixed colours. This knowledge supports later study of colour wheels, schemes, and value relationships. Sculpture height, paper thickness, and frame price are unrelated physical or commercial details, so option A is correct.