Which control is necessary for making equal round dots in watercolour?

Correct answer: Consistent brush load, pressure, and vertical lifting

The governing concept is repeatable brush control. Equal dots require a similar paint-and-water load, consistent pressure, and a vertical lift so the bristles do not drag sideways. Option A includes all three controls. Changing brush size changes dot size, excessive water encourages spreading, and fully wet paper causes the marks to bleed. Practising a repeated touch-and-lift motion on scrap paper helps maintain uniform size and shape.