Incorrect!

You're turning right at a large roundabout. What should you do before you cross a lane to reach your exit?

Take a lifesaver glance over your right shoulder
Put on your right indicator
You selected this answer
Take a lifesaver glance over your left shoulder
Correct answer
Cancel the left indicator

DVSA theory test explanation

On busy roundabouts, traffic may be moving very quickly and changing lanes suddenly. You need to be aware of what's happening all around you. Before crossing lanes to the left, make sure you take a lifesaver glance to the left. This gives you time to react if it's not safe to make the manoeuvre.