Is there a risk of an accident if a driver uses a hands-free device to talk on the phone while driving?
A)No; the device is designed so that there is no risk.
B)Only if the conversation lasts more than five minutes.
C)Yes, there is some risk because attention decreases.Correct
# Explanation
Although a hands-free device allows you to keep your hands on the wheel, **the phone conversation distracts the driver's attention** from traffic and the road, increasing the risk of an accident. Road safety depends not only on having free hands, but on mental concentration on driving.