Final answer:
The element that is NOT included in the general ray tracing algorithm is calculating the distance between each of the objects in the scene.
Step-by-step explanation:
The element that is NOT included in the general ray tracing algorithm is b. Calculating the distance between each of the objects in the scene.
The general ray tracing algorithm involves several steps including: calculating the reflection vector if the ray intersects with a reflective surface, calculating the refractive vector if the ray intersects with a refractive surface, and calculating the intersection points between a ray and an object.
Calculating the distance between objects in the scene is not directly associated with the ray tracing algorithm itself.