Top-down CAD strategy: A “skeleton” (master) assembly or part can be used to define reference geometry and drive the locations and sizes of individual parts throughout the assembly. Validate this statement.

Introduction / Context:
Top-down design methods are common in complex products. A skeleton (also called a master model) captures key datums, envelopes, and driving curves or sketches. This approach improves consistency and reduces rework when design changes occur.

Given Data / Assumptions:

• A parametric CAD system that supports inter-part references is used.
• Multiple related components require consistent alignment and motion paths.
• Change management is important to productivity and model stability.

Concept / Approach:
The skeleton holds reference planes, axes, sketches, and sometimes simplified solids. Individual parts reference this skeleton for critical geometry, creating controlled parent/child links. When the skeleton is updated, dependent parts follow, maintaining design intent across the assembly. Careful management prevents circular references and maintains model robustness.

Step-by-Step Solution:

Verification / Alternative check:
Modify a key dimension in the skeleton and rebuild. Dependent parts and assemblies update predictably, demonstrating centralized control of geometry.

Why Other Options Are Wrong:

• Presentation-only models (option B) do not drive constraints.
• BOM tables (option C) list items but do not define geometry.
• Manual positioning (option D) invites inconsistency and errors.
• Material rendering (option E) is unrelated to geometric control.

Common Pitfalls:
Over-referencing too many parts to a single face; failing to lock the skeleton; creating circular dependencies; neglecting documentation of skeleton parameters.

Final Answer:
Correct: skeleton geometry can drive part positions and sizes