Final answer:
The safest option when power lines fall onto your car is to stay inside the car until help arrives.
Step-by-step explanation:
True. If power lines fall onto your car, the safest option is to stay in the car until help arrives. This is because the metal body of the car acts as a Faraday cage, which shields the occupants from the electrical field outside. When power lines fall on a car, the electrical current will typically flow through the car's metal body, keeping the inside safe from electrical shock.