What activities could pose a highly risky distraction while driving?

Your answer is fully correct because all three activities—entering an address in the sat-nav, writing a text message, and using the telephone even with a hands-free unit—can cause significant distraction while driving. According to German traffic rules, any activity that diverts your attention from the road increases the risk of accidents. Even hands-free phone use requires cognitive focus, which can reduce your reaction times. Therefore, it is advised to minimize these distractions and, if necessary, stop safely before using electronic devices. Understanding this helps you keep your focus on driving and maintain road safety.