10-20 Downstroke Triggers

[Delaware Golf]

Who believes the components in section 10-20 are down stroke triggers...or what starts the downstroke. That starting the downstroke with the lower body is not correct?

10-20-A Hands Trigger
10-20-B Right Arm Trigger (right forearm)
10-20-C Right Shoulder Trigger
10-20-D Muscles of both forearms trigger
10-20-E Left Wrist Trigger

DG