4.2,4,5
5.d
6.a
hope it helps
All of the options listed are powers of the federal branch of government, granted under the Constitution, except "regulate elections," and "set up town governments," since regulating elections is mostly up to the state (although the federal government can technically intervene) and setting up town governments is a local issue.
Answer: convince legislators to make legislation favorable to their interests
Explanation:because lobbyists have significant advantages over private citizens, as they are employed full time to engage in this kind of campaigning.