Digital Multimeters are used to measure ___.

Digital Multimeters (DMMs) are versatile instruments designed to measure a variety of electrical parameters, including voltage, current, and resistance. This capability makes them essential tools for electricians and technicians in troubleshooting and testing electrical systems.

When measuring voltage, DMMs can check both AC (alternating current) and DC (direct current) voltage, which is critical in various applications. Similarly, they can measure current, again in both AC and DC, which helps in assessing the flow of electricity through circuits. Additionally, they can measure resistance, which is important for testing the integrity of electrical components and connections.

The ability to perform these three fundamental measurements is what sets a digital multimeter apart from more specialized tools that might only serve a singular purpose. This comprehensive functionality is why the correct answer encompasses all of these measurement types, highlighting the DMM's broad application in electrical diagnostics and repair.