Final answer:
Debriefing is crucial as it helps identify factors to prevent future restraint and aids in changing or developing new plans to handle similar situations. The correct answer is Option D: a and c.
Step-by-step explanation:
Debriefing after a significant incident is important because it allows for reflection on the event and identification of factors that could prevent the need for future restraint. Answers to this process may include recognizing the triggers that led to the incident and understanding the situational dynamics. The correct answer is Option D: a and c, which states that debriefing can help find factors that may prevent the need for restraint use in the future, and it can help identify the need to change or develop new plans.