The crew of community helpers descended the riverbank, each member wondering what was in store for their day of service. They wore protective gloves and toted trash bags, and they hoped they could make a difference for the environment. As soon as they reached the clearing by the riverbank, they knew they would be busy. What sentence would best add descriptive details to the end of this paragraph?

The river was an important artery for the small town, and industry depended on it.
Aluminum cans littered the shore, and floating debris cluttered the shallow water.
The work crew was an environmental science club from the local middle school.
Fisherman also visited the water that day, in search of the bass indigenous to the area.