How should a brush be moved to make an even straight stroke?

Correct answer: With a steady direction and even pressure

The governing concept is consistency of brush movement. To produce an even straight stroke, guide the brush in one steady direction while maintaining nearly equal pressure from beginning to end. This keeps the line uniform in width and density, so option A is correct. Repeatedly changing direction, spinning the brush, or using uneven pressure interrupts the paint flow and creates a broken or irregular mark.