You're about to overtake a motorcyclist when they look around over their right shoulder. What's the most likely reason for them doing this? You're about to overtake a motorcyclist when they look around over their right shoulder. What's the most likely reason for them doing this?

• Possible answers:

   
• A. The rider intends to move to the right
• B. Something has fallen from the machine
• C. The drive chain is slack
• D. The rear tyre is flat