What does a multimeter measure?

A multimeter is a versatile instrument specifically designed to measure a range of electrical properties, which include voltage, current, and resistance. When measuring voltage, it can determine both direct current (DC) and alternating current (AC) levels. For current measurements, it can also differentiate between DC and AC. Additionally, in resistance measurements, a multimeter can check for continuity and help diagnose electrical circuits.

Multimeters typically combine these functions in one device, allowing technicians and engineers to troubleshoot, repair, and develop electrical and electronic systems efficiently. This broad capability in assessing electrical properties distinguishes multimeters from other measuring instruments that may focus on non-electrical parameters, such as air pressure, mechanical force, or temperature. Hence, the function of measuring electrical properties makes option B the correct choice.