Which practice is most useful for achieving even shading over a large flat area?

Correct answer: Using rhythmic even strokes from the shoulder and arm

The governing concept is consistent stroke control. Moving from the shoulder and arm produces longer, smoother strokes and helps distribute pressure and spacing evenly across a broad area. Light overlapping layers can then build the tone without abrupt bands. Option A is correct because it supports an even value. Wrist-only marks, repeated pressure, or random rubbing tend to create dark spots, streaks, and uneven texture.