Final answer:
The suspension system allows the axles to move up and down in response to ground changes without seriously affecting the load. The stress of road shocks can be evenly distributed throughout the frame by securing the suspension points directly above each set of wheels.
Step-by-step explanation:
The correct answer is Option C - Securing the suspension points directly above each set of wheels.
The suspension system in a car allows the axles to move up and down in response to ground changes without seriously affecting the load. This capability is important for maintaining stability and comfort while driving.
By securing the suspension points directly above each set of wheels, the stress of road shocks can be evenly distributed throughout the frame. This helps to reduce the impact and vibrations felt by the car and its occupants.