The use of what increases learning and retention of material?

The choice emphasizing multiple senses is correct because engaging various sensory modalities significantly enhances learning and retention. This concept is rooted in the idea that when learners use multiple senses—such as sight, sound, and touch—they are able to process and internalize information more effectively. For example, combining visual aids with auditory explanations and hands-on activities creates a richer learning experience, reinforcing the material through diverse channels. This multisensory approach caters to different learning styles, making it more likely that participants will remember the information long-term.

Looking at the other options, relying solely on multiple PowerPoints or just one instructor may lead to a more passive learning experience. These approaches can result in students becoming disengaged if the material is presented in a one-dimensional format. While having one instructor can provide consistency and a cohesive teaching style, it doesn't inherently address the benefits of engaging multiple senses in the learning process. The combination of these methods would still lack the expansive impact achieved through multisensory engagement.