Which components are included in the drivetrain of a vehicle?

The drivetrain of a vehicle refers to the group of components that deliver power from the engine to the wheels. This includes critical elements such as the transmission, which helps to shift gears and control the power output from the engine; the differential, which allows for the distribution of power to the wheels while accommodating differences in wheel speed during turns; and the wheels, which are the final part of the drivetrain where the power is effectively converted into motion.

In contrast, the other options include components that do not fall within the definition of the drivetrain. For instance, brakes and wheels are essential for vehicle function, but brakes are part of the braking system, and wheels, while related, are not considered part of the power transmission system. The steering and suspension systems provide control and support but are not involved in the propulsion of the vehicle. Similarly, seats, the dashboard, and the battery are components related to the vehicle's interior and electrical system, not the drivetrain. Thus, the selection of the transmission, differential, and wheels accurately represents the key elements that work together to transfer power and facilitate movement in a vehicle.