Geometry

Question Analysis:
Focuses on recognizing a square-based pyramid among incorrect 3D shapes.
Main focus: Apex and triangular faces.

Key Concept Explanation:
Flat triangular sides + apex + one polygon base = pyramid.

Step-by-Step Solution:
Only C includes a polygon base and triangular faces meeting at a point.

Option Analysis:
A. Triangular prism
B. Cone
C. ✅ Pyramid