The One Health approach focuses on the interconnection between which elements?

• A. Plants and soil only
• B. People, animals, plants, and the environment
• C. Water and air only
• D. Humans, pets, livestock only

Answer: (B)

One Health lives at the intersection of human, animal, plant, and environmental health within shared ecosystems. It recognizes that threats to health don’t respect species or boundaries: diseases can move between people and animals, agriculture and wildlife ecosystems influence disease and nutrition, and the environment—air, water, soil, climate, and biodiversity—shapes exposure and transmission. By bringing together human medicine, veterinary science, plant health, and environmental disciplines, it aims to prevent and control health issues more effectively.

That breadth is why the best answer includes people, animals, plants, and the environment. Limiting to plants and soil, or to humans, pets, or livestock alone, misses crucial links like wildlife, crops, and ecological factors that drive disease risk and health outcomes. Water and air are important components of the environment, but focusing only on those elements doesn’t capture the full, interconnected system One Health addresses.