Which of the following is a common audio presentation tip?

Using headphones for better clarity is a valuable audio presentation tip because they allow the speaker to hear their own voice as well as any background sounds that may be picked up during the presentation. This auditory feedback ensures that the speaker remains aware of their volume and tone, making adjustments as necessary to maintain an engaging presentation. Additionally, headphones can help block out distracting background noise, allowing for a more focused delivery. This is especially important in environments where audio quality can greatly affect audience comprehension and engagement.

The other choices may not be as effective for enhancing audio presentation. Lowering the volume can diminish the speaker's ability to be heard clearly, while speaking loudly does not guarantee clarity and may lead to distortion. Practicing without equipment may overlook the nuances of sound quality and volume that can arise when actual audio equipment is utilized.