Which pencil shapes are unavailable for tempo editing?

• A. Freehand, Parabolic, Line
• B. Triangle, Square, Random
• C. S-curve
• D. Freehand

Answer: (B)

Tempo editing uses pencil shapes that create smooth, musical tempo changes along the timeline. The shapes supported for shaping tempo curves are ones that interpolate gradually, like Freehand, Parabolic, Line, and S-curve. The shapes Triangle, Square, and Random aren’t available for tempo editing because they would produce abrupt or irregular tempo changes—triangle and square create sharp peaks and sudden jumps, while random would yield unpredictable tempo fluctuations. Such shapes don’t translate well into a usable tempo map, so they aren’t offered for tempo edits.