Question

what does Edward Abbey say that visiting the Glen Canyon area both before and after the construction of the dam makes him qualified to do?

Answer 1

The visit to the Glen Canyon area of the land gives Edward Abbey a brief idea about how to measure land and determine the quality to a large extent.

At the same time, it also allows him to become familiar with the land options and also how it can allow him to determine about other things in life as well.

It also gives him an idea about how to determine the geographical variations of the land.  

Answer 2

Answer:

Evaluate the changes in the land.

Explanation:

I hope this helps; I read the other answer which helped me figure out which option it is. :)