Which of these supports the idea that the Great Lakes are being threatened?

A.
The Great Lakes are losing 2.5 billion gallons of water every day.
B.
Fog and rough water cause dangerous conditions for ships.
C.
Many of the lake's nearby towns are mining areas.
D.
The Great Lakes is a group of five huge lakes found in the U. S. and Canada.
What's Great and Not-So-Great about the Great Lakes

The Great Lakes are a group of five huge lakes found in the U. S. and Canada. Together, they cover more than 94,000 square miles. If you stood on the Moon, you could see the lakes. That's how big they are!
The largest of these lakes is Lake Superior. It is also the largest freshwater lake in the world. Lake Superior is 350 miles long and 160 miles wide. Fog and rough water cause dangerous conditions for ships. Many of the lake's nearby towns are mining areas.
Lake Huron is the second largest of the Great Lakes and is the world's third largest freshwater lake. It is 206 miles long and 183 miles wide. Violent storms often occur over this lake, and navigation can be hard in certain areas during the winter months due to ice. The water in this lake is fairly clean with little pollution. Fishing is an important industry.
Lake Ontario is the smallest of the Great Lakes. It is 193 miles long and 53 miles wide. Fishing is important here, but pollution has been a problem in this lake. Rumors of a large sea monster living in Lake Ontario have been reported over the years. It is not known if such a creature actually lives in the lake.
Lake Michigan is the only Great Lake that is not in Canada. It is surrounded by the states of Wisconsin, Illinois, Indiana, and Michigan. Lake Michigan is just a little smaller than the state of West Virginia. There are about 12 million people who live along Lake Michigan's shores and enjoy its beaches.
Lake Erie is the fourth largest of the Great Lakes. It gets its name from the Erie tribe of Native Americans who once lived along its southern shores. The lake is 241 miles long and 57 miles wide. Waste from the city of Detroit has been dumped into the lake over the years, causing the lake to emit a foul stench.
The Great Lakes are losing 2.5 billion gallons of water every day. Groups such as We Can Save The Great Lakes are trying to bring awareness to the public and are taking action to help save water loss throughout the lakes. In 2008, the U. S. states of Ohio, Michigan, New York, Pennsylvania, Illinois, Indiana, Wisconsin, and Minnesota joined forces with Ontario, a province in Canada, to save the Great Lakes. Their alliance is known as the Great Lakes Compact. The compact tells how the water supply among the five lakes should be managed.