Which of the following must be inspected to assess front and rear wheel play?

To assess front and rear wheel play, the inspection of steering linkage and tie rod ends is essential. This is because tie rod ends are critical components of the steering system that connect the steering gear to the steering knuckle, allowing the wheels to pivot and turn in response to the driver's input. If there is excessive play in the tie rod ends, it can lead to poor handling, uneven tire wear, and compromised vehicle safety.

Additionally, the steering linkage helps to control the precise movement of the front wheels. Any wear or damage in these components can contribute to increased play in the wheel assembly, which can adversely affect steering control and responsiveness. Thus, inspecting the steering linkage and tie rod ends is necessary for evaluating the overall condition of wheel play and ensuring the vehicle is safe for operation.

The other options, while they may be important for overall vehicle maintenance and safety, do not directly contribute to assessing wheel play. Brake pads and rotors pertain to the braking system, suspension springs and shocks deal primarily with ride comfort and stability, and exhaust system components relate to emissions and noise control—none of which provide direct insight into the state of wheel play.