In an essay it should only be one I'm pretty sure, but in a narrative as many as it takes to explain a lesson learned. If you were writing a book your conclusion would be whatever comes to you and whatever you feel the characters would do/say/feel.
Answer:
2 is incorrect because it has no punctuation
I think that kids should have a smartphone because that’s the world we live in now, but they should have a time limit on the phone. they shouldn’t spend the whole day on their phone, only a few hours
It's either b or c, I remember her accusing him of both
