What tool would you use to check electrical continuity in a circuit?

Using a multimeter to check electrical continuity in a circuit is the correct choice because a multimeter is specifically designed to measure various electrical properties, including voltage, current, and resistance. When set to the continuity setting, a multimeter can send a small electrical current through the circuit and determine whether there is a complete path for the electricity to flow. If continuity exists, the multimeter will typically emit a beep or show a reading indicating low resistance, confirming that the circuit is closed.

In contrast, a pressure gauge is meant for measuring pressure in a fluid, not for electrical measurements. A sound level meter is used to measure sound intensity and has no relevance in checking electrical circuits. Similarly, a torque wrench is a tool for applying a specific torque to fasteners, which is not applicable for checking continuity in electrical circuits. Thus, the multimeter stands out as the appropriate tool for this task.