Definition:Sentence fragments are groups of words that look like sentences, but aren't.
Example:Which is why I cried.
This sentence could be corrected by removing "which is why." The sentence "I cried." is a complete sentence. I is the subject, cried is the action.The sentence could also be corrected by joining it with an independent clause. I was sad, which is why I cried.
I would have to say B. You wouldn't put an authors name at the end of the story (Unless it's a paper you're writing). C also falls in the category of a paper and D doesn't seem like you should add it at the end of a story.
Answer: They'll be back by 6:30 pm
Explanation: