Q: You wish to turn right ahead. Why should you take up the correct position in good time?
Correct answer:
To help other road users know what you intend to do
Explanation
If you wish to turn right into a side road, take up your position in good time. Move to the centre of the road when it's safe to do so. This will allow vehicles to pass you on the left. Early planning will show other traffic what you intend to do.