The answer is: b. Deterring criminal behavior
In order to deter criminal behavior, government need to prepare a certain level of precautions in order to discourage the act of criminal behavior in a certain area.
This could be done through several methods, such as create a proper management in the department of justice, impose harsh punishments from criminal behavior in order to make people scared of doing it, or improving the economy to eliminate the needs to steals/rob in the first place.
While the constitution is the law of the land it still lacked some things. The founding fathers knew that future government may take advantage of it, so they added the bill of rights and allowed for more amendments. The bill of rights which are the first ten amendments state that people have a freedom of speech and religion, the right to bare arms,the right to a fair trial ect. Other amendments provide for things like women suffrage.