The purpose of this passage is to clarify what a UFO is. The passage tells you that even though UFOs often star in science fiction movies, most UFOs are actually aircraft, kites, clouds, meteors or rocket debris. It also cites a famous case in order to provide evidence for their claim.
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Answers:
The kind of person I think Fredrick Douglass choices to show that he is.
Have a great night.
The best way to fix a run-on sentence is to add a comma, conjunction, or period. In this case, separating the sentence into 2 with a period is the best option:
Justin rushed through the obstacle course<u><em>.</em></u> He couldn't make it over the final obstacle in time.
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Horrifying because it do tha thang with dat thang and it like boom pow
B. Tells the reader the inner thoughts of a main character.