Test Your Health Smarts: 30 Essential Questions About WellnessShare:FacebookPinterestTwitterMailWhat is the immune system’s main job in the body?43%Next Correct Incorrect The correct answer is：Protecting the body against illnesses and infections What is the immune system’s main job in the body? Delivering essential nutrients across the body Maintaining a stable body temperature Protecting the body against illnesses and infections Eliminating harmful substances from the body 43%
