- ✓ Replace the blades
- B Top up the oil reservoir
- C Increase the tyre pressure
- D Change the spark plugs
Why this is the correct answer
If the blades streak or squeak, they are worn and must be replaced to keep good visibility in the rain.
Ready to pass the DGT theory test?
Practise official-format questions in English, with explanations after every answer and full progress tracking.
Try a free practice test