Answer:
The answer is D. it contains a very variety of trees and shrubs.
Explanation:
Swamps tend to form when water stagnates in a region, causing not only terrestrial trees to grow, but also aquatic plants. These swamps are characterized by being very wooded areas, where the soil has poor drainage, which leads to water stagnation, although this tends to be shallow. The swamps can be both salt water and fresh water.