the third one, if you add the comma without the when then you would have a comma splice (when you put a comma between 2 independent clauses without a conjunction) adding the when before Cynthia makes the first part a dependent variable and makes it okay to add the comma!
Hope this helps! :)
Answer: It’s specific to a single artistic work and doesn’t overlap with other similar works.
Answer: an abandoned mental hospital
<span>Students often leave college with more than $50,000 in student-loan debt. APEX :)</span>
B: Independent Clause. This sentence can stand alone as a complete thought.