Electrocution causes harm to an organism, and hair dryers without built-in shock protection devices in the plug can cause electrocution. Given these facts, what can be done to make hair dryers safer among the following options:
- remove plastic covering
 - immerse in water
 - heating liquids
 - Add shock protection
 - converting electricity to heat
 - Electric generators
 - a hydraulic system
 - increase current


 

    Add shock protection     