Which software allows engineers to design objects from various angles while keeping track of dependencies?

The correct choice is Computer-aided design, or CAD software, because it is specifically designed for engineers and designers to create, modify, and optimize designs in a comprehensive and efficient manner. CAD allows users to visualize objects in three dimensions and from multiple angles, which is crucial for understanding how different components interact within a design.

Additionally, CAD systems often include features that track dependencies and relationships between different parts of a model. This feature is essential when changes are made to one part, as the software can automatically update related components, helping to maintain design integrity and accuracy. It enhances collaboration among engineers by providing a clear and organized approach to complex designs.

Other software types listed, like simulation software, focus more on analyzing and testing designs under various conditions rather than on the actual design and visual aspects. Graphical processing software typically relates to rendering images and is not specific to engineering design. Digital modeling software can refer to various programs used for creating 3D models but may not have the specific tracking and dependency features that specialized CAD applications provide. Thus, CAD stands out as the most relevant tool for the purpose described in the question.