A Admin 🎓 Coach ⭐ 38.03K Points 📊 Rust Q. Which keyword is used to define a mutable variable in Rust? (A) let (B) mut (C) var (D) change 👁️ Show Answer 💬 Discuss 🔗 Share ⚡Menu ✅ Correct Answer: (B) mut Explanation: Rust uses 'mut' to make a variable mutable; 'let' alone creates an immutable variable.