When you sing using your diaphragm, you use the muscles below your lungs to push air out smoothly and steadily. This helps you hold notes longer, sing louder without shouting, and stay in tune. It also keeps your throat relaxed, which protects your voice from damage and makes your tone clearer and fuller. Singing from the throat can lead to tension, hoarseness, and weaker sound. So using the diaphragm supports healthy and powerful singing.Let me know if you need more help! If this helps, feel free to mark it Brainliest