Geometry

Question Analysis:
This question involves understanding the contrapositive statement.
The main focus is on identifying the correct negation and reversal of the original statement.

Key Concept Explanation:
A contrapositive negates both the hypothesis and conclusion and switches their order.

Step-by-Step Solution:
Original statement: If p, then q.
Contrapositive: If not q, then not p.
Here, "p = shape is a square", "q = shape is a rectangle".
So, the contrapositive is: If a shape is not a rectangle, then it is not a square.

Option Analysis:

(A) Incorrect — This is the inverse, not the contrapositive.
(B) ...