Some Scientists Predict That as Atmospheric Carbon Dioxide Levels Increase,the

Some scientists predict that as atmospheric carbon dioxide levels increase,the pH of the oceans will drop,threatening coral and organisms with shells.What is the best explanation for this hypothesis?

A) Carbon dioxide combines with water to form an acid.
B) As the pH of the ocean increases, more carbon dioxide is released into the atmosphere.
C) As the pH of the ocean decreases, more carbon dioxide is released into the atmosphere.
D) Carbon dioxide combines with water to form a base.
E) As the oceans warm, more water is evaporated, lowering the pH of the remaining water.