What is the role of a Light Probe in Unity?

A Light Probe in Unity serves the purpose of enhancing the lighting conditions for dynamic objects in a scene. Specifically, it captures and stores information about the ambient light present in the environment, which is then used to better illuminate moving objects that do not receive direct light from static light sources. This is particularly important in scenarios where dynamic objects need to blend seamlessly with their surroundings, ensuring that they appear adequately lit based on the overall scene lighting.

By using Light Probes, developers can achieve a more realistic visual representation of dynamic elements as they interact with the complex lighting conditions of a scene. This capability is essential for creating immersive environments where the visibility and shadows of moving objects align closely with static background elements.

The other options relate to different functionalities within Unity: sound data capturing isn't the focus of Light Probes, particle effects are managed using different systems, and physics optimizations involve other methods that do not pertain to lighting adjustments.