Final Answer:
Political scientists argue that interest groups are likely to replace the traditional role of political parties in certain aspects of the political process.
Step-by-step explanation:
As political landscapes evolve, scholars suggest that interest groups may assume a more prominent role in shaping political dynamics. Traditionally, political parties played a central role in representing and mobilizing voters, but changing dynamics, including increased polarization and the influence of money in politics, have led some political scientists to predict a shift. Interest groups, which focus on specific policy issues, are seen as potential replacements for parties in representing and advocating for the diverse interests of the population. This shift underscores the fluid nature of political systems and the ongoing adaptation of political institutions.
Therefore, the answer is option B: "Interest groups."