What does measuring current with a digital multimeter typically involve?

Measuring current with a digital multimeter typically involves connecting the meter leads in series with the circuit. This configuration allows the multimeter to become part of the current path, enabling it to measure the flow of electrons (current) going through the circuit. When the leads are connected in series, the total current that flows through the circuit also travels through the multimeter, providing an accurate reading of the current.

In contrast, other methods mentioned in the options do not accurately reflect how current is measured. For example, connecting leads in parallel would measure voltage across a component rather than the current flowing through it. Adjusting voltage levels is relevant to different measurements and testing processes but does not pertain to measuring current directly. Similarly, testing circuit resistance is a separate function that involves a different setup and does not measure current at all. Thus, the correct approach for current measurement is connecting the multimeter in series with the circuit.