I believe quality control would be best
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! :)
It was one of the Roman Catholic Church's most important ecumencial COUNCILS. Prompted by the Protestant Reformation, it has been described as the embodiment of the Counter-Reformation.
