What are the rules regarding wearing seatbelts?

Answer: B — All passengers must be buckled; it's illegal to drive without a seatbelt

The correct answer is that all passengers must be buckled; it's illegal to drive without a seatbelt. This reflects the law in many jurisdictions that requires not only the driver but also all passengers to wear seatbelts. The rationale behind this rule is to enhance safety for everyone in the vehicle. Wearing a seatbelt significantly reduces the likelihood of serious injury or death in the event of a crash, as it helps keep occupants securely in their seats and minimizes the risk of being ejected from the vehicle. In contrast, the other options do not accurately represent typical seatbelt laws. The notion that only the driver is required to wear a seatbelt overlooks the crucial safety requirement that applies to all occupants. Furthermore, suggesting that seatbelts are optional in the back seat is misleading, as most laws mandate that backseat passengers also buckle up. Lastly, allowing passengers to choose whether to wear seatbelts contradicts safety regulations that aim to protect everyone in the vehicle, regardless of their position.