For a car with a two-part seatbelt system, how should you use it?

• A. Use both the shoulder and the lap belt
• B. Use only the shoulder belt
• C. Use only the lap belt
• D. Do not wear a seatbelt

Answer: (A)

Wearing both parts of the two‑part seatbelt system at the same time is essential because the shoulder belt and the lap belt work together to keep you properly restrained. The lap belt sits low across the hips and pelvis, spreading crash forces away from the abdomen and internal organs, while the shoulder belt crosses the chest and shoulder to prevent you from being thrown forward or sideways. When you wear both, the restraints share the load and help keep you in the correct position for the airbag to work effectively. Using only one part can leave you unrestrained or cause injury, so the safest and most effective use is to buckle up with both belts properly positioned—lap belt low and snug, shoulder belt across the chest and shoulder, not under the arm or behind the back.