Which of the following most often determines what bodily movements are appropriate during a speech?

The most appropriate choice is the setting, as it significantly influences what types of bodily movements are considered appropriate during a speech. The physical context in which a speech takes place can dictate the norms and expectations for speakers. For example, a formal setting such as a conference or a courtroom may require more restrained and controlled movements, while a casual setting such as a community gathering may allow for more animated and informal gestures. Thus, understanding the setting helps the speaker align their movements with the expectations of the audience and the environment, enhancing the overall effectiveness of the communication.

The topic, while important for content and engagement, does not directly dictate physical movements in the same way that the setting does. Confidence affects delivery but is more about a speaker's internal perception rather than external behavioral appropriateness. Visual aids can complement a presentation, but they do not determine how a speaker might use their body or movements during a speech; they serve different purposes in the presentation dynamics.