The correct answer is D. Chattahoochee River
Explanations.
The Chattahoochee River is a river located in the Southern of the U.S. and is part of the border of three states: Georgia, Florida, and Alabama. Because of this, te Chattachooche River plays an important role in all the three states not only because it crosses different cities but also due to the attempts to preserve the river and the use of water in it. This had led to different controversies and disputes between the three states in the last decades as each state claims ownership over the river and therefore its right to use this natural resource. Therefore, the one that is likely to be the source of this legal battle is Chattahoochee River, because due to its location Alabama, Georgia, and Florida claim ownership over the river.
Our reaction should be just to stay calm and think about more ways and just keep trying to find a way.