The correct answer is C) it's not able to grow,
What is happening to the plant life on the shores of Lake Powell because of the changing water levels is that it's not able to grow.
Lañe Powell is located in the Border of Utah and Arizona, close to the Rainbow Bridge National Monument. Today, many people visit Laake Powell as a vacation destination. But since some time ago, the water level of Lake Powell is changing. This has affected the Lake in that plant life on the shore is not able to grow and that keeps the state authorities worried.