Final answer:
The statement is false because adverse weather conditions can affect various aspects of driving such as visibility, vehicle stability, and brake efficiency, not just traction.
Step-by-step explanation:
The statement "Adverse weather conditions affect only traction" is false. Adverse weather conditions can affect visibility, vehicle stability, brake efficiency, and even the driver's ability to control the vehicle, in addition to affecting traction. For example, heavy rainfall can lead to hydroplaning, where a layer of water builds up between the tires of a vehicle and the road surface, leading to a loss of traction and preventing the vehicle from responding to control inputs. Fog, snow, and other adverse weather conditions can also significantly reduce visibility, posing additional risks to drivers.