Answer: Bagley's ethical decision making tree
Explanation: In simple words, it refers to the method of decision making when the managers are facing an ethical dillema. Under this approach, the managers considers all alternatives and takes into account the impact of making them.
In the given case, Patty is trying to ascertain whether she should close the facility temporally or permanently and what impact does it make.
Hence from the above we can conclude that she and her managers are using Bagley's ethical decision making tree.