Answer: D. Patient safety researchers at John Hopkins University have found “10 percent of all U.S. deaths are now due to medical error,” making it the third leading cause of death in the United States.
Source: Martin A. Makary and Michael Daniel, “Medical error – the third leading cause of death in the US,” BMJ, May 3, 2016, cited in CJ&D's Briefing Book: Medical Malpractice By the Numbers.