Yes, what is the question.
An adjective clause is a dependent clause that, like adjective which modifies a noun or pronoun. Adjective clauses begin with words such as that, when ,where, who, whom, which, and why...... hope that helps!!!
I would say either A, or B. But I think B because it is giving you the setting of where this is taking place. So you wouldn't expect to all of a sudden see pirates right? You would more expect to hear of a lost civilization or see a camel walk past. It's basically getting you into the mindset of where the story's taking place and what to expect next. <span />
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