To synchronize the appearance of a hallway's walls with a reflective floor, which setting should be enabled on the reflection probe?

Enabling Box Projection on the reflection probe is essential for accurately capturing and reflecting the surrounding environment, especially in a complex space like a hallway. Box Projection allows the reflection probe to create reflections based on a defined box-shaped area, which is particularly useful when dealing with surfaces that have walls close to the reflective floor. This setting ensures that the scene's geometry is more accurately reflected, allowing for a realistic appearance where the hallway walls appear coherent with the reflective characteristics of the floor.

This option is vital for achieving the desired visual synchronization, providing a more immersive experience. It captures a wider range of angles and surfaces, thus creating a more accurate reflection that includes both the walls and floor, enhancing the overall realism of the scene.