Correct!

What should you do to move off safely from a parked position?

Signal if other drivers will need to slow down
Leave your motorcycle on its stand until it's safe to move off
Give an arm signal as well as using your indicators
Look over your shoulder just before you move off
Correct answer

DVSA theory test explanation

Just before you move off from the side of the road, you should take a look over your shoulder to check your blind spot. This will help you to see any road user who's not visible in your mirrors.