A. Platelets
B. Red Blood Cells
C. White Blood Cells
D. All of these
🧠 Explanation:
White blood cells protect our body against diseases by fighting infections like bacteria or viruses. They’re like soldiers in the immune system, attacking germs to keep us healthy. In Pakistan, this is studied in biology classes to understand health. It’s important because strong white blood cells prevent illnesses, helping people stay active for school, work, or daily life, especially during flu seasons.
