What describes a Directional Light?

• A. A light that emits 360 degrees from a spot in the world.
• B. A light without a identifiable source position; light appears to come from a consistent direction.
• C. A light that emits from a plane and casts shadows only in the forward direction.
• D. A light that changes color with the camera angle.

Answer: (B)

Directional light models illumination from a source far away, so there’s no identifiable position for the light. The light appears to come from a fixed direction, and its rays are effectively parallel across the scene—like sunlight. In Unity, you control this direction by rotating the light, which changes how shadows and highlights fall on objects, while the light’s position doesn’t matter. This makes it ideal for outdoor scenes where the sun’s direction determines lighting for the whole scene, with uniform intensity and color across objects at different distances.

The other descriptions describe different types of lights: a point light emits in all directions from a single point; an area/plane light emits from a surface; and a light whose color changes with the camera angle isn’t how directional light behaves.