Which arrangement would be ideal for conducting an effective lecture for a small group?

A U-shaped arrangement is ideal for conducting an effective lecture for a small group because it fosters interaction and engagement among participants. This setup facilitates clear sightlines, allowing everyone to see both the instructor and each other. With the open center of the U, participants feel encouraged to engage in discussions, ask questions, and share ideas. This arrangement also promotes a more collaborative learning environment, making it easier for students to participate actively rather than just passively listen.

In contrast, a theater-style arrangement may limit interaction as it usually places participants in rows facing the front, which does not encourage discussion or communication. A room with rows also has similar drawbacks, primarily focusing on presentation rather than engagement. While boardroom arrangements can be effective for collaboration, they may not provide the best flow for a lecture format, as the layout can be too formal and may restrict the instructor's ability to present materials effectively to all students.