To add your own unique ideas to completed 3D models, you do not need to understand the design process of the 3D model's creator.

It depends

Explanation:

If the model is a spliced model, and has many different rigged parts (maybe like a movable T-rex or something), then you need to understand how it all works, and how it was made, but if its a solid object (lets say a rubber duck model) that you want to add stuff to, or change the color of, then you don't really need background info.

answer; i believe the correct answer is (psychological pricing);