Why is loading more paint alone insufficient for making a very long continuous line with a liner brush?

Correct answer: Because even speed, pressure and suitable paint consistency are also necessary

A continuous liner-brush line depends on several linked controls: enough paint, a workable consistency, steady movement and nearly even pressure. Too much paint cannot compensate for a hand that stops, presses unevenly or uses paint that is too thick or thin. Option D is correct because it includes the complete control system. The other choices are absolute claims that contradict normal liner-brush practice and do not explain line continuity.