Navigable waters include which of the following?

A) Coastal waters
B) Freshwater wetlands
C) The Great Lakes
D) All of these choices are correct.

Navigable waters include a wide range of water bodies that are capable of being used for commerce or transportation, which encompasses coastal waters, freshwater wetlands (when they are connected to larger bodies of water that are navigable), and the Great Lakes. These areas are considered navigable waters under various legal and regulatory frameworks, reflecting their importance for transportation, commerce, and environmental protection.