What is an effective technique to maintain audience attention during a presentation?

Varying pitch or tone during a presentation is an effective technique to maintain audience attention because it creates an engaging and dynamic delivery. When a speaker modulates their vocal characteristics, it helps to emphasize important points and maintain the audience's interest. A varied vocal delivery can prevent monotony, which can lead to disengagement. Engaging the audience through vocal variation not only keeps them attentive but can also help convey the emotional content of the presentation, making the material more relatable and memorable.

Using slides with bright colors can potentially grab attention initially, but it's the content and delivery that sustain it. Speaking quickly might indeed allow for more information to be shared, but it may lead to the audience struggling to absorb the material effectively. Limiting interactions to the end of the presentation reduces opportunities for engagement, which can result in decreased interest and participation throughout the presentation. Therefore, vocal variation stands out as the best method to keep an audience engaged.