Geometry

Question Analysis:
This problem gives algebraic expressions for two opposite sides, and states they are parallel.
The main focus is applying the rule: one pair of opposite sides parallel and congruent ⇒ parallelogram.

Key Concept Explanation:
If WX ∥ YZ, then making WX = YZ ensures WXYZ is a parallelogram.

Step-by-Step Solution:
Set 4x − 3 = 2x + 5
Subtract 2x: 2x − 3 = 5
Add 3: 2x = 8
Divide by 2: x = 4
So the correct answer is: B. 4

Common Mistakes:
Swapping sides
Forgetting to solve equation alge...