Context: Read the passage. Then answer the question below.

The wetlands of Everglades National Park in Florida have three species of mangrove trees: red mangroves, black mangroves, and white mangroves. These trees grow in the brackish wetland environment, where fresh water from rivers mixes with salt water from the ocean.
The Everglades wetlands are also home to American alligators and American crocodiles. American alligators live in the brackish wetlands but can also live in freshwater rivers. American crocodiles prefer brackish or saltwater environments.
Figure: an American alligator rests near mangroves.
Which of the following best describes an ecosystem in the Everglades wetlands?
A. the red mangroves, the American crocodiles, and brackish water
B. a forest of white mangrove trees
C. the black mangroves, the white mangroves, and the American alligators
Identify the correct choice from the options below and respond with the letter of the correct option.

A