According to given sentences, Option B: Zoe went to bed, her parents began planning a surprise party for her is a correct option.
A run-on sentence is a sentence consisting of two or more independent clauses (group of words expressing a complete thought)
Adding to it, that is not joined properly with a period, semicolon or joined by a conjunction (like and, but, or) and that, instead, is connected improperly with a comma or without any type of punctuation.
Therefore, correct option is B.
Learn more about Run-on sentences, refer to the link:
https://brainly.com/question/12121996
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