Trailer hitches are typically attached to which part of a vehicle?

Trailer hitches are typically attached to the chassis of a vehicle because the chassis provides the structural support necessary to handle the weight and stress involved in towing. The chassis is designed to withstand significant forces, making it the ideal location for attaching components like trailer hitches, which are integral for towing loads.

Bumpers, while they may serve as points for some accessories, are not robust enough to handle the loads associated with towing. Similarly, the body of the vehicle is primarily focused on aesthetics and passenger safety rather than structural integrity for towing applications. The suspension, on the other hand, is designed to support the vehicle's weight and provide a smooth ride but is not a suitable point for attaching a trailer hitch due to its primary role and dynamic function. Therefore, the chassis is the correct and most appropriate choice for hitch attachment.