Final answer:
When passing a vehicle on the left on a two-lane road, a driver must give a left-hand signal, either electronically or using hand and arm signals. Therefore the correct answer is Option 1.
Step-by-step explanation:
To pass a vehicle on the left on a two-lane road with traffic moving in both directions, you must give a left-hand signal. This signal indicates your intention to move into the left lane and overtake the other vehicle. It is important for safety to make sure other drivers on the road are clearly aware of your actions. When making a left-hand signal, it can be done either electronically through the vehicle's turn signals or using the hand and arm signals if the vehicle's signals are not functioning. Remember that communication on the road is key to preventing accidents and ensuring smooth traffic flow.