What is the main purpose of transformations in 3D modeling?

The main purpose of transformations in 3D modeling is to manipulate and arrange objects within a virtual space. Transformations involve operations such as translation (moving an object from one location to another), rotation (turning an object around a specified axis), and scaling (resizing an object). These operations are fundamental to the process of positioning and orienting objects correctly in a 3D environment, enabling artists and developers to create scenes that are cohesive and visually engaging.

In the context of 3D modeling, effective use of transformations allows for precise control over object placement, which is crucial for scene composition, animations, and interactions. For instance, when designing a game level or an architectural visualization, the ability to accurately position and orient objects can significantly impact the overall design and functionality.

The other choices relate to different aspects of 3D modeling but do not capture the core functionality of transformations. Texturing, lighting, and simplification are all important but are separate processes that typically take place after or in conjunction with transformations to enhance the visual quality or performance of the model.