Certified Animation Professional (CAP) Practice Test 2025 - Free Practice Questions and Exam Study Guide

In animation, "in-betweens" refer specifically to the drawings or frames used to fill in the gaps between keyframes. Keyframes represent the main points of action or significant poses in an animation sequence. By creating in-betweens, animators ensure that the transition between these keyframes is smooth and fluid. This process is crucial for achieving a natural flow of movement, allowing the animation to come to life.

In contrast, the other options address different aspects of animation but do not define in-betweens. The final renderings of an animated scene are the completed products that consumers see, and they require all elements, including in-betweens, to be incorporated. Alternate design ideas for characters involve concept art and character design, which are separate from the movement and timing involved in in-betweens. Sound effects added during the editing process relate to the audio component of an animated piece, which enhances the visual experience but does not pertain to the visual continuity established by in-betweens.