Final answer:
The primary reason for using visual aids in teaching is to clarify the material being taught, which helps to define and illustrate concepts and makes complex information accessible.
Step-by-step explanation:
The primary reason for using visual aids when teaching a lesson is D. To clarify the material being taught. Visual aids such as infographics, diagrams, and videos can help to define, illustrate, explain, or prove an idea, making complex information more accessible. By enhancing presentations with visual components, we assist students in building a comprehensive understanding of the material. Additionally, visual aids can help readers think critically about an idea and give strength or credibility to the instructional content.
Choosing the right visual aids ensures that they are clear, related to the topic, and serve a specific purpose. They add value to the lesson by helping students focus on the most important points without being overwhelmed. Educational strategies that incorporate visuals are not only informative but also create opportunities for engaging discussions, thereby helping students to engage with the material on a deeper level.