An artist makes a leaf in one stroke with a round brush but the tip remains blunt. What should be corrected?

Correct answer: Reduce pressure and lift the brush quickly at the end

The governing principle is pressure control during a tapered brush stroke. A round brush makes a broad mark when pressed, but its contact area narrows as pressure is released. Reducing pressure and lifting promptly at the end produces the pointed leaf tip, so option B is correct. More pressure would widen the end, equal pressure would keep it blunt, and reversing the grip is irrelevant.