Which brush is useful for making small leaf shapes in watercolour?

Correct answer: Pointed round brush

The governing brush principle is that a pointed round brush provides both a fine tip and a fuller belly. Touching the tip to the paper can make a narrow leaf point, while pressing slightly and lifting can create a wider leaf body in one controlled stroke. Therefore, option A is correct. A wall roller and a very large flat brush are unsuitable for tiny details, and a hard comb is not a standard watercolour brush. Practise pressure changes on scrap paper first.