Final answer:
The alternative energy source that includes a shutoff switch on the electric meter is fuel-powered generators. Solar panels, hydrogen cells, and nuclear power rods do not typically have a shutoff switch on the electric meter.
Step-by-step explanation:
The alternative energy source that includes a shutoff switch on the electric meter is D. Fuel-powered generators.
Fuel-powered generators, such as gasoline-powered or diesel-powered generators, are often used as a backup power source in case of a power outage. They typically have a shutoff switch on the electric meter to disconnect the generator from the electrical system when it is no longer needed.
In contrast, options A, B, and C (solar panels, hydrogen cells, and nuclear power rods) do not typically have a shutoff switch on the electric meter. Solar panels and hydrogen cells are connected to the electrical system and produce electricity continuously, while nuclear power rods are used in nuclear power plants to generate electricity without a shutoff switch on the electric meter.