Respuesta :
a description. the author describes what the lake in its natural state is like to prove his point that it is better naturally then when man or the governments interference
Answer:
A description
Explanation:
In these lines, the author describes the experience of travelling on a boat on the river. He tells us that if we were to take a trip on Lake Powell followed immediately by another boat trip on the river below the dam, we would realize what a huge impact the dam has had on the environment. The author describes the scene in careful detail in order to form an image in the mind of the reader and in this way make a more persuasive argument.