The best way to emphasize an important point in a public presentation is to:

Pausing for a long moment before delivering an important point in a public presentation is an effective technique as it builds anticipation and draws the audience's attention to the forthcoming information. This strategic pause allows listeners to focus and mentally prepare to receive the key message, enhancing its impact. The silence creates a moment of reflection, emphasizing the significance of what is about to be said.

Using a pause also helps to distinguish the important point from the surrounding material, making it stand out in the audience's memory. This method can be particularly powerful, as it generates suspense and highlights the importance of the upcoming statement.

In contrast, while raising your voice dramatically can grab attention, it may come off as overly theatrical if not used sparingly. A compelling visual aid can enhance understanding but may not directly emphasize the spoken point as effectively as a pause. Repeating the point can aid in clarity, but excessive repetition might dilute its importance and cause the audience to disengage rather than focus.