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.
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.