Hatching scope: In a sectional view, only surfaces actually cut by the cutting plane are cross-hatched; visible edges behind the cutting plane are drawn but not hatched.

Introduction / Context:
Section views must clearly separate what is cut from what is simply seen beyond the cutting plane. Cross-hatching (section lining) is reserved for cut material, ensuring that the viewer does not misinterpret background surfaces as being sliced.

Given Data / Assumptions:

• Cut regions are filled with a hatch pattern appropriate to convention.
• Visible background edges (beyond the cutting plane) appear as standard object lines without hatch.
• Hidden lines are typically omitted within the sectioned area unless they add necessary information.

Concept / Approach:
Hatching is a semantic signal: “material has been intersected here.” If visible background faces were also hatched, the viewer would be unable to distinguish actual cut surfaces from merely visible ones, leading to errors in interpretation and fabrication.

Step-by-Step Solution:
Draw the cutting plane and obtain the sectional outline of intersected material.Apply hatch strictly within those outlines.Show any visible edges that lie behind the cutting plane as regular object lines, with no hatch applied.Confirm that the hatch does not extend into background regions.

Verification / Alternative check:
Compare standard section examples: only the cut face is hatched; background contours remain unhatched, preserving depth cues and correctness.

Why Other Options Are Wrong:
“Incorrect” contradicts the definition of hatching. Conditions about metals, paper, or hidden lines do not change the rule. The presence or absence of hidden lines is a separate clarity decision.

Common Pitfalls:
Accidentally filling entire cavities; letting hatch leak across boundaries; using too dense a hatch that masks background edges.

Final Answer:
Correct