Final answer:
When faced with transporting 6 people in a 5-seat vehicle, the correct and legal option is to leave at least one person behind to ensure everyone has access to and uses a safety belt.
Step-by-step explanation:
The question is related to vehicle safety and the proper use of seat belts. When a vehicle has 5 seats with safety belts, including the driver's seat, and there are 6 people needing to travel, the safest and only legal option is d. Leave at least one person behind. This ensures that everyone in the vehicle is using a safety belt, as required by law, to minimize the risk of injuries in the event of an accident.
It's important to remember that each person in a vehicle must occupy a seat with a functioning safety belt. All passengers are required by law to use safety belts for their own protection. Not adhering to these safety measures can lead to serious injuries and legal consequences. Choosing to transport more people than the vehicle is designed to accommodate not only is unsafe, but also illegal and goes against society's common welfare as supported by government-enacted seat belt laws.