Classification – Category vs items: pick the odd one out. Three are specific stationery items; one is the umbrella category that includes them. Which option is different? Options: Stationery, Pencil, Pen, Marker.

Introduction / Context:
A classic classification trick opposes a super-category with its member items. The category term is the natural outlier among specific instances.

Given Data / Assumptions:

• Stationery: category encompassing writing and office supplies.
• Pencil, Pen, Marker: concrete items within the stationery category.

Concept / Approach:
Identify “type vs instance” and select the single category word among item names.

Step-by-Step Solution:
Spot Stationery as the super-category.Recognize Pencil/Pen/Marker as member items.Therefore, Stationery is the odd one out.

Verification / Alternative check:
Category–member relationship is unambiguous; no other option names a broader class.

Why Other Options Are Wrong:
Pencil/Pen/Marker: Each is a specific tool, not a category.

Common Pitfalls:
Confusing “stationary” (not moving) with “stationery” (office supplies); spelling matters.

Final Answer:
Stationery