G Gopal Sharma 🎓 Tutor III ⭐ 38.32K Points 📊 Microbiology Q. Active immunity is induced by (A) Infection (B) Placental transfer of antibodies (C) Injection of antibodies (D) Injection of gamma- globulins 👁️ Show Answer 💬 Discuss 🔗 Share ⚡Menu ✅ Correct Answer: (A) Infection