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? .

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.  

boundary is what it refers to hope this

explanation:

both are true, the congress does have the power to create banks, even if this power is not specifically described in the constitution, since there is nothing restricting it and there is power given to the congress to make "all laws which shall be necessary and proper". maryland was not allowed to tax a branch of the national bank operating there, and the supreme court decided that no state could. both of these topics were discussed in a decision of the mcculloch v. maryland case in 1819.