No one

Zack looks both ways, and sees no one is around. They just said he had to make one lap around the school and class gets out in approximately five minutes.

If he walked it’d take him approximately four minutes to go around the school. That way he could be cautious and make sure no one saw him, but if someone was in the hall and he waited for that someone to leave he might not make it back in time.

If he runs it’d take maybe two minutes to get around the school. If someone saw him maybe they wouldn’t recognize him or they’d only get a glimpse. He’d just have to hope it wouldn’t cause a commotion or he might get caught.

What should he do?