Well, I'm not 100% sure, but id say the, improve oral and skin health? but im not sure about the others.
-i hope its right :3
For the examples given, health promotion would be the education of the public about substance abuse. They are putting the idea of substance abuse being bad in the public's head. Thereby, attempting to improve public health although, there's no guarantee.
Banning smoking in public places is a "health protection" because it's a physical act that is attempting to make the public health better.
Testing food if also a "health protection" because it's a physical way to make sure that people do not end up with foodborne illnesses or hepatitis' related to dirty food/soil/etc.
Overloading an electrical socket could cause an extreme build up of energy and can cause a spark or even a huge fire in your house or any type of place. The minimal risk is that if the socket is overloaded it could damage the appliance plugged in to the socket.