Actually the answer is D. A is missing a comma. B is too. C shouldn't have a common after the word famous.
Answer:
Didn't Beowulf cut off Grendel's arm and he ended up bleeding out.
Everything else seems right.
Explanation:
C because a compound sentence is when you have once sentence, but it can become two. it is separated by commas (,)
Answer:
It would be B. For spring break, my family will visit Washington D.C.
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