This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Social & Preventive Medicine
Lack of ability of a pa to do normal function is called as ? 
Select and explain. 
A. Impairment, B. Disease, C. Disability, D. Handicap
C: Disability
Answer: C: Disability 
Explanation: Ans. is 'c' i.e., Disability According to WHO definitions, Disease: Any abnormal condition of an individual that impairs function Impairment: Any loss or abnormality of psychological, physiological or anatomical structure or function Disability: (Because of impairment,) any restriction or inability to perform an activity in a range considered normal for a human being