What type of device is used to measure resistance?

The correct choice is indeed an ohmmeter, as this device is specifically designed to measure resistance in electrical circuits. Resistance is quantified in ohms, and the ohmmeter provides a direct reading of this resistance value. It works by passing a small current through the component being tested and measuring how much the flow is reduced by the resistance in the circuit, allowing for accurate readings.

While a multimeter can measure resistance as one of its functions, its primary purpose is broader; it also measures voltage and current. An ammeter is exclusively used for measuring current, and a voltmeter is used specifically for measuring voltage. Each of these devices serves its unique function, making the ohmmeter the most direct and appropriate choice for measuring resistance.