Which statement about instructional aids is true?

Instructional aids play a vital role in enhancing the learning experience by sustaining learner attention. When incorporated effectively, these aids can break the monotony of a lecture format, making the material more engaging and accessible. They cater to various learning styles by providing visual, auditory, or kinesthetic stimuli, which help to reinforce the concepts being taught and capture the learners' focus. Therefore, using instructional aids can significantly improve retention and understanding of the material being presented, making them a crucial component of effective instructional practice.

In contrast, the other statements do not align with the fundamental principles of instructional design. While it's true that some lessons may not require aids, asserting their necessity or irrelevance without context is misleading. Instructional aids can be valuable across diverse topics, including lengthy lectures, where they may help in organizing content and maintaining engagement, contrary to the notion that they should be avoided. Additionally, stating that they should only cover minor points undermines the comprehensive role aids can play in addressing major concepts or facilitating complex ideas within a lesson.