Acceptance criteria: to be considered acceptable, manufactured parts must remain within which specified bounds that define the permissible variation from the nominal values?

Introduction / Context:
Quality control relies on numeric windows around target values. These windows ensure parts function and assemble even with inevitable process variation.

Given Data / Assumptions:

• A drawing states nominal dimensions and allowable variation.
• Inspection compares measured values to the allowable window.
• We must identify the named bounds that measurements cannot exceed.

Concept / Approach:
“Tolerances” define permitted deviation from nominal. As long as the actual size and geometry remain within the upper and lower tolerance limits (including any geometric tolerances), the part is acceptable.

Step-by-Step Solution:

Verification / Alternative check:
Inspection reports flag out-of-tolerance conditions; any value beyond stated tolerances triggers nonconformance.

Why Other Options Are Wrong:

• Boundary limits: ambiguous; could refer to derived boundaries (virtual condition), but acceptance is broadly governed by tolerances.
• Hole limits: applies only to a specific feature type, not all parts.
• Specification: too general; a specification contains tolerances but is not the numeric bound itself.

Common Pitfalls:
Ignoring geometric tolerances; a size may be within limits but fail position or form tolerances, still rendering the part nonconforming.

Final Answer:
Tolerances