What is the primary function of a meter?

The primary function of a meter is to present a standard display for measurements, which is why this choice is correct. Meters are designed to quantify electrical parameters such as voltage, current, resistance, and power. By displaying these measurements in a readable format, they allow users to monitor and assess electrical systems accurately. This helps in diagnosing problems, ensuring safety, and maintaining efficient operation in electrical installations.

In contrast, while generating current or converting AC to DC are important functions in electrical engineering, those functions do not pertain to the role of a meter itself. Additionally, storing electrical energy is related to batteries and capacitors, which are distinct from meters, further clarifying the specific purpose of a meter as a measurement tool. Thus, the correct choice reflects the essential role of meters in providing vital information about electrical characteristics.