A speaker changes position on stage at every new section of a presentation. When is this movement effective?

Correct answer: When movement clearly signals transitions between ideas

The governing concept is purposeful body movement in presentation communication. Moving to a new position can help the audience notice a transition from one idea or section to another, provided the movement is planned and does not obstruct the view. Thus option B is correct. Movement used only to hide nervousness, continuous pacing, or blocking the screen distracts the audience rather than improving structure and understanding.