Geometry

Question Analysis:
This question requires understanding base shape and recognizing oblique orientation.
The main focus is identifying a prism that is not aligned vertically.

Key Concept Explanation:
Oblique prisms have angled lateral faces.
If the base is a trapezoid, it’s a trapezoidal prism.

Step-by-Step Solution:
Base = trapezoid
Sides not perpendicular → oblique

Option Analysis:
A: ✅ Correct
B: ❌ Sides not perpendicular
C: ❌ Wr...