How many keyframes can an animation curve have?

• A. One
• B. Two
• C. Multiple
• D. Zero

Answer: (C)

Keyframes are the points that define a curve over time. An AnimationCurve is built from a sequence of these points along the timeline, with the curve interpolating between them to create smooth changes in value. Because you’re shaping how something changes across time, you add more than one keyframe to capture the progression. There isn’t a fixed limit: you can have two, three, dozens, or more keyframes as needed to achieve the desired motion. Having multiple keyframes lets you craft complex easing, overshoot, and nuanced timing, whereas a single keyframe would simply pin a value at one moment and wouldn’t define a changing animation.