Answer:
The correct answer is: D. The dam must be shut down and the reservoir drained.
Step-by-step explanation:
Edward Abbey, an environmentalist and writer, was a strong advocate for the removal of Glen Canyon Dam and the restoration of the natural state of the area. In his book "The Monkey Wrench Gang," he expressed his belief that the dam should be shut down and the reservoir drained in order to allow the land around Glen Canyon to return to its natural state. Abbey argued that the dam had caused significant environmental damage and that removing it was necessary to restore the natural ecosystem and preserve the wilderness.