Final answer:
The main goal when positioning a model within a scene for rendering is to achieve realistic lighting.
Step-by-step explanation:
When positioning a model within a scene for rendering, the main goal is to achieve realistic lighting.
Realistic lighting helps to create a natural and believable appearance in the rendered image or animation.
It involves considering factors such as the direction and intensity of light sources, shadows, and how light interacts with different surfaces in the scene.