How can a GameObject be animated in Unity?

Animating a GameObject in Unity can be accomplished effectively using the Animation window and the Animator component. The Animation window allows developers to create and edit animations by manipulating properties over time, such as position, rotation, and scale, as well as changing other attributes of GameObjects. This window enables the creation of keyframes, which are the starting and ending points of any smooth transition.

The Animator component is then used to control the playback of animations created in the Animation window, allowing for complex animation management through state machines and transitions. This combination empowers artists and developers to bring their assets to life convincingly, providing a robust framework for animating various actions, from simple movements to complex sequences.

The other options do not align with the standard practices for animating GameObjects in Unity. Audio clips are not used for visual animations; instead, they pertain to sound management. Rigidbody settings are focused on simulating physics interactions rather than animation. Modifying game physics settings also does not pertain to the actual animation of GameObjects; it's more about the behavior and interactions of objects within the physics engine.