Answer:
A
Step-by-step explanation:
(1. Eliminate C. Cross sections can't be 3-D.
(2. Eliminate B. It's impossible to get a circle from a rectangle and it's different than the other 2 options.
(3. This leaves A and D. And between them the correct option is A. A square being cut from a rectangular prism is never guaranteed but a hexagon can be cut because a rectangular prism has 6 faces, and a hexagon has 6 sides. So A is the correct answer.
