What is the first step to take in the event of a vehicle breakdown on the highway?

Answer: B — Turn on your hazard lights

Turning on your hazard lights is crucial as the first step during a vehicle breakdown on the highway. This action serves to alert other drivers that your vehicle is experiencing a problem and is either stopped or moving much slower than normal. Activating your hazard lights increases visibility and helps ensure safety by signaling to those approaching that they should exercise caution. This is especially important on busy highways where traffic can move at high speeds. Other drivers will better understand the situation and can adjust their speed or change lanes to avoid a potential accident. Once your hazard lights are on, it creates a safer environment for both you and any passengers while you consider your next steps, such as safely exiting the vehicle or calling for assistance.