Final answer:
A lobbyist is a paid representative for an interest group who advocates for their agenda and influences policy decisions.
Step-by-step explanation:
The term that refers to a paid representative for an interest group is Lobbyist. Lobbyists are individuals who are hired by interest groups to advocate for their agenda and influence policy decisions. They engage in activities such as informing interest group members about legislative proposals, communicating with lawmakers, and reporting back to the interest group. Unlike volunteers or amateur lobbyists, professional lobbyists are compensated for their work.