This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Concept of Health and Disease, Subject name: Social & Preventive Medicine
Component of HDI are all except- 
Select and explain. 
A. Life expectancy, B. Knowledge, C. Income, D. Social status
D: Social status
Answer: D: Social status 
Explanation: Ans. is 'd' i.e., Social status * HDI is a composite index combining indicators representing three dimensions.i) Longevity: Life expectancy at birth.ii) Knowledge: Mean years of schooling (gross enrolment ratio) and expected year of schooling. (In older editions of Park, i.e., 21st/e and older than that, it was adult literacy rate instead of expected year schooling).iii) Income: GNI Per Capita (In older editions of Park, it was GDP per capita instead of GNI per capita).