Which of the following teaching techniques combines volume with vitality and conviction?

The teaching technique that effectively combines volume with vitality and conviction is Direct Instruction. This method involves clear and explicit teaching where the instructor actively guides students through information. It emphasizes a strong presence, utilizing vocal volume to capture attention, alongside spirited delivery to engage learners and reinforce confidence in the material being taught. The instructor's passion and firmness in presenting content enable students to grasp concepts more thoroughly, making it an effective technique in facilitating learning.

While Feedback, Discussion, and Demonstration are important instructional strategies, they do not focus on the same combination of vocal dynamism and energetic presentation typical of Direct Instruction. Feedback usually involves responding to student performance, Discussion centers on student participation and interaction, and Demonstration involves showing rather than telling, without necessarily emphasizing the same lively presentation style.