Scope of general-purpose CAD systems: which domains were considered when developing CAD to support a wide range of uses?

Introduction / Context:
Computer-Aided Design (CAD) tools evolved to serve multiple industries. The same core capabilities—precise geometry, constraints, layers, parametrics, and visualization—apply to mechanical parts, buildings and bridges, electronic layouts, and even media production and animation workflows.

Given Data / Assumptions:

• General-purpose CAD platforms aim for broad applicability.
• Different domains add plug-ins or specialized modules but share base drawing/modeling engines.
• The question asks which fields were considered; the comprehensive answer should include all listed domains.

Concept / Approach:
Mechanical CAD emphasizes parametric solids and assemblies; structural CAD focuses on drafting, analysis links, and detailing; EDA integration supports schematics and PCB layout; media/animation uses NURBS/subdivision surfaces and rendering, often exchanging data with CAD for visualization. A common geometry kernel and robust drafting tools enable these varied applications.

Step-by-Step Solution:
Recognize mechanical, structural/electronic, and animation/graphics as established CAD use cases.Note that “general-purpose” implies breadth, not a single niche.Therefore, select the comprehensive option “All of the above.”

Verification / Alternative check:
Major CAD ecosystems offer industry toolsets for mechanical, AEC (architecture/engineering/construction), and media, evidencing broad design intent.

Why Other Options Are Wrong:
A, B, and C each cover only part of the landscape. E is wrong because all are valid.

Common Pitfalls:
Assuming CAD equals only mechanical 3D; 2D/3D drafting and modeling serve many disciplines.

Final Answer:
All of the above.