Question 217General Subjects - QMED

The correct answer is B) chain pipe wrench. A chain pipe wrench is the most effective tool for rotating large-diameter pipes. The chain wraps around the pipe, providing a secure grip and the ability to apply significant torque to turn the pipe. This makes it the ideal choice for rotating large pipes, which can be difficult to grip and turn with other tools. The other answer choices are not as well-suited for this task. A strong back may provide leverage, but does not have the gripping power of a chain pipe wrench. Basin and monkey wrenches are designed for smaller pipes and would likely slip or not provide enough torque for a large pipe.