Read the example. Some students who are concerned about pollution start a group at their school to educate other students about things they can do to help protect the environment. They organize an event that will inform students about the recycling containers in the cafeteria that can be used to recycle bottles and cans. The students paint signs in green letters, pass out green flyers, and dress in all green clothes to advertise and draw attention to the event.

Which statement best describes the symbolism in the example?

The bottles and cans symbolize the environment.
The event about recycling symbolizes the students.
The recycling containers in the cafeteria symbolize pollution.
The color green symbolizes environmental protection.