Which statement best describes the author’s viewpoint in "The Thirsty Tree"?

It is imperative to restore the American Southwest to the environment of about a hundred years ago.

Encouraging the salt cedar tree and decreasing overgrazing are the best solutions in the American Southwest.

People might do better to take a holistic approach to the health of the ecosystem in the American Southwest.

China beetles might be a part of the solution to a number of misguided efforts regarding salt cedar trees.