Which are considered primary colours?

Correct answer: Red, yellow, and blue

In the traditional subtractive art colour model taught at this level, red, yellow, and blue are identified as the primary colours. They are treated as basic colours from which secondary colours can be produced: red mixed with yellow gives orange, yellow mixed with blue gives green, and blue mixed with red gives violet. Therefore option B is correct. Option A lists the three traditional secondary colours, while option C lists neutrals rather than the primary set. Option D contains mixed or named shades and is not the standard primary group. The answer follows the conventional school art colour wheel; scientific RGB or printing CMY systems use different primaries, but those systems are not the model asked here.