What is used to represent the properties of a tween in the Motion Editor?

The Motion Editor in Adobe Animate provides a detailed interface that allows users to fine-tune the animation properties of tweens. The key feature used in this tool is property curves. These curves visually represent the properties being animated, such as position, rotation, and scaling, which can be adjusted over time to create more dynamic and fluid animations.

By manipulating these curves, animators can define the easing and timing of the tween, which impacts how the object moves between keyframes. This creative control helps to achieve professional-looking animations that can convey a range of emotional nuances and pacing.

Other options like layer properties, animation keyframes, and timeline markers serve different functions within the animation workflow, but they do not specifically represent the properties of a tween in the same way that property curves do. Layer properties pertain to the overall settings and arrangement of layers, keyframes mark specific points in the timeline where changes occur, and timeline markers help in organizing the animation sequence but do not visually represent motion properties as curves do.