When loading additive scenes in Unity, which approach ensures lighting consistency across scenes?

• A. Use a Lighting Data Asset with matched ambient lighting and consistent light probes across scenes.
• B. Load each scene with its own separate Lighting Data Asset to avoid conflicts.
• C. Rely solely on post-processing to blend lighting between scenes.
• D. Disable all lighting when loading additive scenes.

Answer: (A)

Sharing a Lighting Data Asset across additive scenes ensures lighting remains consistent when scenes are combined. The Lighting Data Asset stores baked global illumination data and light probe information, which defines ambient lighting and how objects are shaded by probes. When multiple scenes contribute to the final view, using the same asset means they all reference identical lighting data, so ambient color, indirect lighting, and probe shading match across scenes. If each scene uses its own Lighting Data Asset, ambient settings and probe data can differ, causing visible lighting seams or mismatches. Post-processing can tweak visuals but cannot fix baked lighting differences, and turning off lighting would remove lighting entirely. So the best approach is to use a single Lighting Data Asset across scenes and keep ambient lighting and light probe data consistent.