There were people who had laid tarp on the muddy ground close to the stage to watch the concert . But everyone had to keep stepping over these people and their tarp to get closer . It was a bad spot for these people to set up to sit down . My aunt and uncle crashed at my place for the weekend , since they were seeing the concert too .

Question: Why was tarp placed on the ground ?
Answer: They wanted everyone to keep their shoes dry .They wanted to keep the ground dry while it rains .It had just rained and left the ground wet .None of the above choices .