Lobbying is an effective tool to influence public policy and political opinion primarily because:
Lobbying provides information to aid members of Congress in creating bills that will be supported by research and public opinion.
This option highlights the role of lobbyists in supplying lawmakers with crucial information, data, and research that can shape policy decisions. By providing expertise and resources, lobbyists can help legislators understand complex issues and the potential impacts of proposed legislation, which increases the likelihood that bills align with public interest and support.