M Mr. Dubey 🎓 Coach ⭐ 103.11K Points 📊 JAVA Q. Which Java keyword is used to ensure an interface is functional? (A) abstract (B) interface (C) @FunctionalInterface (D) static 👁️ Show Answer 💬 Discuss 🔗 Share ⚡Menu ✅ Correct Answer: (C) @FunctionalInterface Explanation: `@FunctionalInterface` ensures the interface has one abstract method.