Review Question - QID 214611

A 71-year-old man presents to his primary care physician for follow-up 2-weeks after he was started on a new lipid-lowering medication. He says that he has had mild gastrointestinal upset but is otherwise tolerating PO. He discontinued taking cholestyramine due to intolerable side effects about 1 month before starting this new medication. His other medications include several longstanding medications for hypertension and hypercholesterolemia. During the visit, his physician states that they will need to do blood work to make sure that his liver enzyme levels are normal. The medication that was most likely started in this patient has which of the following mechanisms of action?