In Adobe After Effects, what is the function of the "Graph Editor"?

The Graph Editor in Adobe After Effects serves the purpose of creating custom easing curves, which allows for more precise control over animation timing and movement. By using the Graph Editor, animators can visualize and manipulate the speed of their animations through a graphical representation of keyframes. This visual display enables you to alter the motion characteristics, such as how fast an object starts and stops, thereby creating more fluid and dynamic animations. By adjusting the curves, you can influence acceleration and deceleration, making animations feel more natural.

The other options focus on different functionalities within After Effects that do not pertain to the Graph Editor. Adjusting audio levels is managed through the audio panel, animation of text layers is done through specific text animation features rather than the Graph Editor, and exporting files involves the render queue or Adobe Media Encoder, unrelated to the graphical manipulation of keyframes that the Graph Editor specializes in.