## Core Concept
The National Rural Health Mission (NRHM) aims to improve healthcare delivery in rural areas, and one of its key components is the recruitment of Accredited Social Health Activists (ASHA) workers. The principle of primary health care being tested here relates to the accessibility and community participation in healthcare services.

## Why the Correct Answer is Right
The correct answer, **C. Community participation**, is right because recruiting ASHA workers from the same village they serve fosters community participation in healthcare. ASHA workers, being from the local community, can effectively mobilize the community to adopt healthy behaviors, promote health education, and facilitate access to healthcare services. This approach ensures that healthcare services are more acceptable and accessible to the community, which is a core principle of primary health care.

## Why Each Wrong Option is Incorrect
- **Option A:** This option is incorrect because it does not directly relate to the recruitment strategy of ASHA workers from the same village.
- **Option B:** This option is incorrect as it does not specifically address the aspect of community involvement in healthcare delivery.
- **Option D:** This option is incorrect because, although equity is an important principle of primary health care, the specific strategy of recruiting ASHA workers from the same village primarily emphasizes community participation.

## Clinical Pearl / High-Yield Fact
A key point to remember is that community participation, as seen in the NRHM's approach with ASHA workers, is crucial for the success of primary health care initiatives. This strategy not only improves health outcomes but also ensures that the services are culturally acceptable and accessible to the community.

## Correct Answer: C. Community participation.