Which type of instructional aid includes videos and slides?

The correct choice is based on the understanding that the term "Audio/Visual materials" encompasses both video and slide presentations. This classification highlights the importance of incorporating multiple sensory modalities in teaching and learning environments. Utilizing videos allows instructors to present complex information dynamically, while slides offer a concise way to share key points and data visually.

The integration of these formats can enhance learner engagement and retention of information by providing visual context and auditory stimuli, which cater to varied learning preferences. Additionally, Audio/Visual materials are effective for demonstrating practical skills or concepts that may be difficult to convey through text alone, thereby fostering a more comprehensive learning experience.