Final answer:
Lobbyists provide information, expertise, and assistance in drafting legislation to members of Congress. They testify in committee hearings and help lawmakers understand their constituents' views. They also play a role in agenda-setting by providing bill outlines and influencing other lawmakers indirectly.
Step-by-step explanation:
Lobbyists provide information to members of Congress by offering expertise in a specific field and helping to draft legislation. They also testify in committee hearings about the legislation being discussed. Interest groups and lobbyists play a crucial role in agenda-setting by providing legislators with bill outlines or even writing sections of bills based on their materials. Lobbyists also inform lawmakers about the views of their constituents and provide voting cues on unfamiliar issues. Additionally, they target members of relevant committees to indirectly influence other lawmakers.