The answer is A. Mercedes threw Andrea, Mercedes' best friend, a surprise party last night. This choice uses an appositive ("Andrea, Mercedes' best friend,") to combine the two sentences. An appositive is a phrase separated from the rest of the sentence by commas that describes something (in this case Andrea).
Choices B and C are incorrect because the uses of the words "but" and "when" to combine the sentences do not make logical sense. Choice D is incorrect because it uses a comma to combine the sentences without a conjunction, creating a run-on sentence.
Hope this helps!
The article is a argumentative tone/mood. Evidence of this is when the author wrote "NASA’s space program is worth preserving at any cost."That shows how they personally believe that it is worth preserving and that they’re trying to prove their opinion is valid. Also when the author says"It is impossible to list all the benefits of a thriving space program." The author has a strong opinion that they believe which makes it argumentative.
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An audio recording would most likely convey the characters' actions during this scene with a change in each character's tone of voice.
It would be weird to actually read the directions, volume wouldn't do anything for their actions, and each character speaks their lines anyways, so this is a silly option.