## **Core Concept**
The question pertains to the population norm for health assistants in tribal areas, which is a critical aspect of healthcare infrastructure planning in India. The norms for staffing and infrastructure in primary health centers (PHCs) and sub-centers are defined by the Indian government to ensure adequate healthcare delivery. These norms vary based on the area's population and its characteristics, such as being a tribal or hilly area.

## **Why the Correct Answer is Right**
The correct answer, , indicates that for tribal areas, the population norm for a health assistant is 1 per 30,000 population. This relaxed norm compared to non-tribal or plain areas reflects the challenges in maintaining healthcare infrastructure and workforce in difficult terrains and underprivileged communities. The government aims to ensure equitable healthcare access despite geographical and socio-economic disparities.

## **Why Each Wrong Option is Incorrect**
- **Option A:** . This option suggests a norm that might be applicable to a different category of health workers or areas, not specifically tailored for tribal regions.
- **Option B:** . This could be a standard applicable to plain areas or a different type of health worker, not reflecting the specific needs and challenges of tribal areas.
- **Option D:** . This option might overestimate or misrepresent the required population norm for health assistants in tribal areas, not aligning with official guidelines.

## **Clinical Pearl / High-Yield Fact**
A crucial point to remember is that healthcare planning in India, especially in tribal and hilly areas, involves adjusting norms to account for difficult terrain and lower population density. For medical educators and postgraduate students, understanding these population norms is essential for planning and delivering healthcare services effectively.

## **Correct Answer:** . 30,000.