Unarmed defense and control skills refer to the techniques used by the police to stop criminal acts, protect the people and their own safety, and arrest criminal suspects when they are unable or inconvenient to use police equipment and weapons. Control is the ultimate goal of defense. In the face of complex dangers, how to implement one move to control the enemy and ensure safety? At the same time, when many people are against one person, we can prevent and avoid chaos. While grasping the foundation, we should strengthen the confrontation training close to actual combat, highlight the ability training of combining fighting and escape control in actual combat, and learn from the action essentials of "one move to defeat the enemy" in China Wushu to strengthen the training of unarmed defense and control. If there is no "firm but gentle" when the two sides fight, there will be fear, panic, disappointment and even cold feet, so there is no doubt that they will lose. Carrying out "red-blue confrontation" is conducive to shortening the gap between drills and actual combat. Tai Chi is of little use in actual combat. So choose item D.