I mean like is this a serious question?
Answer:
Answer choice (C), yet
Explanation:
On the list of conjunctions, there is and, but, or, yet, etc. But what about the other choices? Well, (A), the word is which is just the word be, but third person, so it is not a conjunction. (B), student, is a noun, not a conjunction. (D), she, is also a noun. And lastly, (E), the word good, is an adjective, not a conjunction. Therefore, it is (C), yet. Hope this helps!
The prepositional phrase for this sentence is "go until Friday." The word "go" is a preposition. Think of it as a squirrel and a log. To find a preposition, say "The squirrel (went) [insert preposition] the log." If it makes sense, it is a preposition. Then just find the phrase to go along with it!