Answer:
I'm think the second choice is correct. Maybe. Seems like the best fit
In all things they come out to be there’s always good an evil in all situations witch ever you choose could be your downfall
The second sentence, "I love vanilla ice cream, but my sister likes butter pecan," has the correct punctuation. In a compound sentence, the comma always goes before the coordinating conjunction (In your case, this conjunction was "but.").