Why is it essential to wear a seatbelt while driving?

Wearing a seatbelt is essential because it significantly increases the chances of surviving a collision. Seatbelts are designed to keep occupants securely in their seats during a crash, preventing them from being ejected from the vehicle or colliding with the interior surfaces of the car, which can cause serious injuries or fatalities. The physics of a crash demonstrates that being restrained by a seatbelt can reduce the risk of severe injury by distributing the force of the impact across the stronger parts of the body, decreasing the likelihood of traumatic injuries.

While legal requirements and fuel efficiency may be important considerations in their own right, the primary purpose of a seatbelt is safety, making option B the most relevant and impactful reason to emphasize when discussing the importance of wearing one.