Geometry

Question Analysis:
This question checks for understanding of the structural definition of pyramids.
Focus: Faces and number of bases.

Key Concept Explanation:
A pyramid has one polygon base and flat triangular lateral faces that converge at one apex.

Step-by-Step Solution:
B fits: one base (rectangle) + four triangle sides + apex.

Option Analysis:
A. Cube
B. ✅ Pyramid
C. Cylinder