The tone can best be described is option A i.e., supportive.
What is the passage about?
Edward Abbey takes us beyond the city wall and the asphalt belting of superhighways to special pockets of wilderness that stretch from the interior of Alaska to the dry lands of Mexico in this wise and lyrical book about desert landscapes and the mind.
Thus, as per the passage, The tone can best be described is option A i.e., supportive.
Below is the missing passage attached in an image form.
More information on Edward Abbey can be found at
brainly.com/question/4229214.
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