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What should you do if you're driving a slow-moving vehicle on a narrow winding road?

Keep well out to stop vehicles overtaking dangerously
You selected this answer
Wave the vehicles behind to come past you if you think they can overtake quickly
Pull in when you can, to let the vehicles behind overtake
Correct answer
Give a left signal when it's safe for vehicles to overtake you

DVSA theory test explanation

If you're driving a slow-moving vehicle along a narrow road, try not to hold up faster traffic. If you see vehicles following behind, pull over in a safe place and let the traffic pass before continuing. Do not wave other traffic past - this could be dangerous if you or they have not noticed a hazard ahead.