Geometry

Question Analysis
This question tests knowledge of the Triangle Inequality Theorem.
The main focus is determining whether three given sides can form a valid triangle.

Key Concept Explanation
The Triangle Inequality Theorem states that the sum of any two sides must be greater than the third side.

Step-by-Step Solution
Apply the Triangle Inequality to each choice:
A: 3 + 4 = 7 (Not greater than 7) → ❌
B: 5 + 6 = 11, which is not greater than 12 → ❌
C: 4 + 5 = 9 (Not greater than 9) → ❌
D: 6 + ...