The answer is B.) The safari stopped at an oasis, a moist fertile spot in the desert.
The appositive phrase is a moist fertile spot in the desert. You can read the rest of the sentence without that part and still have a complete sentence. It describers oasis.
The tense plot or the heart stopping danger. <span />
The author uses cause and effect relationships to drive the plot of the story by allowing you to see the actions, mistakes, and consequences that may come from them in a light that shows what it does to their life.
