Which of these items is often included in the Supplemental Restraint Systems in a vehicle?

The steering wheel is often included in the Supplemental Restraint Systems (SRS) of a vehicle because it is commonly equipped with an airbag. The SRS is designed to enhance the protection of occupants during a crash. In many modern vehicles, the steering wheel contains an airbag that deploys in the event of a collision to help cushion the impact for the driver. This system works in conjunction with seat belts to provide additional safety measures.

The other options listed do not relate to the SRS. Brakes are a critical system for vehicle operation but do not provide supplemental restraint during a collision. The oil system and fuel tank also serve essential functions in vehicle operation but are not designed to protect occupants in an accident. Hence, the steering wheel stands out as a vital component of the SRS by including the airbag mechanism.