What is a necessary condition for effective presentation according to the element height specifications?

Effective presentation hinges on several factors, one of which is the relationship between element height and viewing distance. When determining element height, it is crucial to consider how far the audience will be from the display. This ensures that the visual content is easily seen and understood without strain, allowing for better audience engagement and communication of the presented information.

By aligning the element height with the viewing distance, you can optimize legibility and impact. For instance, larger text or graphics may be necessary for viewers positioned farther away, while closer viewers may require smaller elements. Therefore, this consideration is fundamental to achieving an effective audiovisual presentation, ensuring it is accessible to all audience members regardless of their seating position relative to the display.