Imagine driving down the highway and reading a sign that states "Save the planet—don’t litter."Which technique of policy enactment is being used?.



Answer :

 save the planet policy enactment is being used.
  don't litter because it can keep the planet clean and healthy to stop global warming.

The correct option is:  

Hortatory.  

In terms of policy implementation, hortatory techniques are those that encourage people to comply with a policy by appealing to their better senses in an attempt to make them act in a certain desired way.

This technique is used public campaigns to discourage smoking or drinking.