Which of the following is a distraction technique in RCDT?

In the context of Physical Control Techniques, particularly in RCDT (Restraining Control Defensive Tactics), a distraction technique is designed to create an opening that allows officers to control or escape a situation without escalating it further. The hammer fist is a clear example of a distraction technique because it typically involves striking with the bottom part of the fist, targeting sensitive areas to momentarily incapacitate an opponent or draw their attention away. This immediate physical impact can serve to distract a person and enable the officer to take further action, whether that be restraining the individual or disengaging from a confrontation.

Other options like guard in, mount escape, and ground takedown are primarily focused on defensive maneuvers or escapes rather than acting as a distraction. They are techniques aimed at addressing a physical confrontation rather than diverting the opponent's attention.