The Joint Commission (TJC) adopted a formal Sentinel Event Policy in 1996 to help health care organizations that experience serious adverse events improve safety and learn from those sentinel events1. The Sentinel Event Policy explains how The Joint Commission partners with health care organizations that have experienced a serious patient safety event to protect the patient, improve systems, and prevent further harm1. Each accredited organization is strongly encouraged, but not required, to report sentinel events to The Joint Commission1. Organizations benefit from self-reporting in the following ways: The Joint Commission can provide support and expertise during the review of a sentinel event1. Therefore, the answer is B. The Joint Commission (TJC).