D Dhruva 🎓 Extraordinary ⭐ 4.38K Points 📊 Biology Q. The sound lub-dub lub-dub is produced by (A) Liver (B) Kidney (C) Heart (D) Lung 👁️ Show Answer 🔗 Share ⚡Menu ✅ Correct Answer: (C) Heart You must be Logged in to update hint/solution 💬 Discussion 💬 Comment