A. Tobacco Smoking
B. Water Pollution
C. Cold Drinks
D. Junk Food
🧠 Explanation:
Tobacco smoking causes 90% of lung cancer cases, a major health issue. For public health students, this highlights epidemiology, making it a key topic for studying health risks, medical science, and prevention. Smoking drives cancer rates. Understanding this clarifies health impacts. It’s essential for analyzing public health, medicine, and epidemiology. Studying smoking’s effects offers insights into how habits cause diseases, crucial for public health, medicine, and biology.