Correct answer: B. Reduce speed as there may be loose gravel or mud on the road.
Where earth-moving machinery is working, there are likely to be mud and gravel deposits on the road. Also the noise of such machines might make it hard for road workers to hear the approaching traffic. When you come across earth-moving machinery, slow down and proceed with extreme caution.
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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