Which of the following is associated with effective training?

People learn most effectively when they engage in hands-on experiences, making "learning by doing" a foundational principle of effective training. This approach allows individuals to practice skills in real-life scenarios, which reinforces knowledge and enhances retention. When learners actively participate in the training process, they are more likely to understand the material deeply and apply it effectively in practical situations, such as firearm handling and safety procedures in the context of NRA training.

In contrast, learning through observation alone does not engage the learner actively and may lead to a superficial understanding of the concepts. Static learning environments limit interaction and practical application, which can hinder the development of essential skills. Emphasizing memorization often leads to rote learning, which does not facilitate the ability to adapt and apply knowledge in dynamic situations. Therefore, the focus on hands-on experience as a means of learning is what sets "learning by doing" apart as the best practice for training effectiveness.