Which part of the bumper assembly includes outer and inner cylinder components?

The correct choice is energy absorbers because they are specifically designed with both outer and inner cylinder components to effectively absorb and dissipate the impact energy during a collision. This design allows the energy absorbers to deform and compress under stress, thus preventing excessive force from transferring to the vehicle's occupants and critical components. The outer cylinder often serves to provide a protective barrier, while the inner cylinder enhances the absorption capacity during a crash, making the system efficient at minimizing damage.

The other options, while components of a bumper assembly, do not incorporate the design of having distinct outer and inner cylinder components. The bumper cover primarily serves an aesthetic and minor protective function as the visible exterior of the bumper. The impact strip is a reinforcement element that contributes to impact resistance but does not consist of cylinder-type components. A crash pad provides cushioning but is not structured like the energy absorbers, as its main role is to provide a soft surface for passenger safety and comfort, lacking the specific functional design of outer and inner cylinders for energy absorption.