Which shape can generally be formed by moving a brush in a rotating motion?

Correct answer: Circular or curved shape

The governing concept is the connection between hand movement and the resulting brushstroke. A rotating motion continually changes the direction of the brush, so the mark follows an arc or circular path. With suitable pressure and control, it can create curved outlines, loops, or rounded forms. Therefore, option D is correct. A square, triangle, or straight line requires more angular or linear movement rather than continuous rotation.