What is a major factor in dictating how much energy the vehicle can absorb to protect the occupants.?

A major factor in dictating how much energy a vehicle can absorb to protect occupants is its structural integrity, particularly the design and materials used in the vehicle's chassis and crumple zones. These components are engineered to deform and absorb impact energy during a collision, reducing the force transmitted to occupants. Additionally, the vehicle's weight and distribution of mass also play a crucial role in energy absorption capabilities.