What technique is least likely to gain student attention?

Long lectures are least likely to gain student attention because they can become monotonous and disengaging over time. Students typically thrive on interaction and variety in their learning experiences. In contrast, techniques such as humor, engaging questions, and visual aids actively involve students and stimulate their interest. Humor can create a friendly environment, engaging questions can provoke thought and discussion, and visual aids can enhance understanding and retention by appealing to visual learners. These strategies are effective in keeping students focused and motivated, whereas long lectures often fall short in maintaining interest and engagement with the material.