Which blood cells fight infection? By Kalsoom Tahir ✅ Fact Checked 📊 Difficulty Easy 📅 Last Updated 13 Aug 2026 A. Red blood cells B. Platelets C. White blood cells D. Plasma Check Answer 💡 Explanation: White blood cells (leukocytes) are the immune system's primary defense against pathogens. 📚 Topics: Biology Science 🎯 Exams: GEN NTS