What are the targets of interest group lobbying?

The correct choice highlights the broad goals of interest group lobbying, which is to influence various aspects of the political environment, including the membership of the interest group itself, political party agendas, and public opinion.

Interest groups aim to mobilize their members to advocate for their interests, thereby reinforcing their base. They often work to shape or align with the positions of political parties to ensure that their interests are represented in the political discourse and policymaking. Additionally, influencing public opinion is crucial for interest groups because a well-informed and supportive public can impact legislative agendas and motivate politicians to act in favor of the group's goals.

In contrast, the other options limit the scope of interest group lobbying to specific areas such as Congress and the President or focus on elements outside the primary target areas, missing the comprehensive approach interest groups take in their advocacy efforts. Thus, the option capturing the multi-faceted targets of interest group lobbying is the most accurate.