The __ button is used to add motion to a scene.

The __ button is used to add motion to a scene.

• A. toggle auto key
• B. record key
• C. play animation
• D. freeze key

Answer: (A)

In 3ds Max, adding motion is achieved by recording keyframes as you animate, and the Auto Key button is what makes that automatic. When Auto Key is on, any transformation you apply—move, rotate, or scale—on the current frame automatically creates keyframes for the selected objects. This is how you efficiently build motion in a scene, because the changes you make are captured as animation data without you needing to place each key manually. The other options don’t add motion by themselves: playing animation simply runs the existing animation, not create new motion; a “freeze key” action isn’t a standard feature for enabling motion; and while there is a way to place keys manually, that’s handled by a Set Key or Key tool and doesn’t automatically record movement as Auto Key does.

In 3ds Max, adding motion is achieved by recording keyframes as you animate, and the Auto Key button is what makes that automatic. When Auto Key is on, any transformation you apply—move, rotate, or scale—on the current frame automatically creates keyframes for the selected objects. This is how you efficiently build motion in a scene, because the changes you make are captured as animation data without you needing to place each key manually.

The other options don’t add motion by themselves: playing animation simply runs the existing animation, not create new motion; a “freeze key” action isn’t a standard feature for enabling motion; and while there is a way to place keys manually, that’s handled by a Set Key or Key tool and doesn’t automatically record movement as Auto Key does.