Correct answer: C. The driver should stop and take a break.
Driving when you are tired can be very dangerous, and it may cause you to micro-sleep (or nod off momentarily). At 100 km/h you travel at 28 metres a second, so if you micro-sleep for just 4 seconds you would travel over 100 metres without being in control of the vehicle. Never drive if you are fighting sleep.
This is an official-style question from the Safe and Responsible Driving topic of the Ireland driver theory test (Cat. B). Practise all 807 questions free on iTest.ie — with timed mock exams, automatic mistake tracking and progress sync across devices.
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