"You are in a long line and it's moving very slowly, and you can see the worker is working as quickly as he can. What would you do?" It's not the exact question, but very similar. You're in a long line, and it's going slow. So what's your reaction.
The worker is going as fast as he can. Clearly it's busier than the store can handle. Nothing I say or do could possibly help the poor guy out, so I'll just let him do his job. After all, he knows how to do it much better than I do.