Final answer:
The given sentence is a run-on because it contains two independent clauses joined without the correct punctuation or conjunction. It can be corrected by separating the clauses with a period, connecting them with a comma and conjunction, or using a semicolon. Option number a is correct.
Step-by-step explanation:
The sentence "Ellie wept during the movie it had an emotional ending" is indeed a run-on sentence. This is because it consists of two independent clauses, "Ellie wept during the movie" and "it had an emotional ending", that are incorrectly joined without proper punctuation or a conjunction. To correct the sentence, it could be separated into two sentences with a period, joined with a comma and a conjunction, or joined with a semicolon.
For example, a corrected version could be:
- "Ellie wept during the movie. It had an emotional ending."
- "Ellie wept during the movie, because it had an emotional ending."
- "Ellie wept during the movie; it had an emotional ending."