Answer:
For an underage passenger who is traveling in a car without the seatbelt on, the adult who is driving the car is responsible.
Explanation:
- It is considered conventionally and by law, that if an adult is traveling to somewhere in a car with underage people, the adult is responsible for their in-vehicle safety.
- Hence, the adult has to make sure that all the safety precautions are taken care of when he is hosting underage people in the vehicle that he is driving.