This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Levels of Prevention of Disease, Subject name: Social & Preventive Medicine
Early ambulation after a major operation is an example of: 
Select and explain. 
A. Health promotion, B. Specific protection, C. Disability limitation, D. Rehabilitation
C: Disability limitation
Answer: C: Disability limitation 
Explanation: Early ambulation after major operation is a protection against deep vein thrombosis, which helps in disability limitation. Teiary level of prevention- applied when disease has advanced beyond early stages. It aims to reduce or limit disabilities & help in rehabilitation. Rehabilitation is restoration of an individual to the highest possible level of functional ability.