Which of the following roles directly aids in the accomplishment of a group's objectives?

The selection of task roles as the correct answer reflects their fundamental purpose within group dynamics. Task roles are specifically designed to facilitate the completion of objectives and goals within a group setting. Individuals who take on these roles focus on the operational aspects of the group's tasks, ensuring that work gets done efficiently and effectively. They contribute to setting agendas, organizing discussions, providing information, and making suggestions that help steer the group toward its goals.

In contrast, maintenance roles concentrate on supporting interpersonal relationships and fostering a positive group atmosphere, which, while important, does not directly lead to accomplishing specific objectives. Self-interest roles often prioritize personal gain over the group's objectives, potentially leading to conflict or distraction from the group's mission. Conflict roles involve engaging in disputes or disagreements, which can disrupt productivity and focus, rather than enhance effectiveness in achieving the group's aims. Hence, the primary function of task roles in aiding the accomplishment of a group's objectives makes them the correct choice.