Expository essays should be FAIR to other points of view.
For me, the answer is letter D.
Only choice D has the technical words associated to geography. The rest of the choices contain common words that any mundane could use. But choice D talks about geology itself in the ocean which is highly influenced by drilling and mining. Knowledgeable readers would understand this because drilling and mining require workers to tap into the geological rocks deep beneath the ground which may cause a significant alteration in the oceanic geology.
External conflict: The swan was stuck in thorns. Evidence for this is: Nevertheless, he was able to release it from the thorns.
It is b
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The answer would be B. Easy Respect
I hope this helps you :)