The correct answer is B) those who make public policy.
Political parties try not to alieniate large numbers of voters. Interest groups try not to alienate those who make public policy.
Political Parties has some relationship with other strong interest groups in the nation. For instance, National Organizations such as the AFL-CIO, the labor Unions association, has some ties to the Democratic Party. That is when Lobbyists play an important role in negotiating the projects of interest groups. Then is correct to say that political parties try not to alieniate large numbers of voters and interest groups try not to alienate those who make public policy.