Question

Interest groups

have lobbyists that usually provide misinformation to public officials

create political action committees to run campaigns for its members

form based on people's shared issues, viewpoints, or experiences

make coalitions in order to weaken the voices of individual people

Answer 1

Well, an interest group is just a group of people for a common concern. For a political interest group, they are a group of people who aim to influence legislation. So, you can say that an interest group are advocates who try to influence public opinion and/or policy.