The correct answer is "The house she found—the one with orange paint, worn carpet, and an outdated kitchen—is very affordable"
Explanation:
In grammar, one of most common punctuation marks used to separate non-essential elements such as examples, comments, explanations, etc. are the em dashes which are longer than regular dashes and can be used in the same way than parentheses or commas, except that commas are used with only one element rather than a set of elements.
According to this, in the case of the sentence presented, the elements "the one with orange paint, worn carpet, and an outdated kitchen" should be enclosed with em dashes or even parentheses as they are just additional information and therefore the correct revision is "The house she found—the one with orange paint, worn carpet, and an outdated kitchen—is very affordable".
