Which of the following is a limitation of using OBJ files for Unity imports?

Using OBJ files for Unity imports is limited because they only include mesh geometry. This means that while the OBJ file format can represent the shape and structure of a 3D model, it lacks the ability to store other important data such as animation information, rigging, or comprehensive material specifications.

In contrast, formats like FBX contain extensive information that enables the import of both mesh geometry and animations, along with rigging and materials, thus providing a more complete representation of 3D assets for use in Unity. The limitation of OBJ files makes them less suitable for models that require movement or animated behaviors in Unity, as all these attributes would need to be created or assigned separately after import, which can complicate the workflow significantly.