Which of the following is a sign of AI manipulation in video or images?

• A. Unnatural skin
• B. Clear edges and stable lighting
• C. High-resolution audio
• D. Consistent lip-sync

Answer: (A)

Understanding how AI manipulation shows up in visuals often comes down to how skin and texture respond to light. Unnatural skin is a telltale clue because skin has very complex, subtle variations in color, texture, pores, and micro-shadows. When a generated face is real-looking overall but the skin feels too smooth, evenly lit, or has inconsistent shading or strange highlights, those artifacts happen because the model isn’t reproducing real skin in every micro-detail. That mismatch between the rest of the image and the skin texture is a common, noticeable cue that a photo or video might be AI-generated or manipulated.

The other options describe qualities that aren’t reliable indicators. Clear edges and stable lighting can occur in high-quality real footage or in well-edited material, so they don’t reliably signal manipulation. High-resolution audio isn’t about the visual content and doesn’t by itself point to manipulation in a video or image. Consistent lip-sync can be achieved in both genuine footage and well-made edits, so it isn’t a definitive sign of AI manipulation either.