Final answer:
The M2 .50 Cal weighs approximately 75 pounds (34 kilograms).
Step-by-step explanation:
The correct answer is b) Approximately 75 pounds (34 kilograms).
The M2 .50 Cal, also known as the Browning M2, is a heavy machine gun used by the United States military. It has a weight of approximately 75 pounds when including the gun, barrel, and tripod.