**Core Concept**
The Community Needs Assessment approach is a method used to identify and prioritize health needs in a community, particularly in the context of the Reproductive & Child Health (RCH) program. This approach involves a systematic process of collecting data, analyzing health indicators, and setting targets for various health activities at a specific level.

**Why the Correct Answer is Right**
The Community Needs Assessment approach typically sets targets at the sub-district or block level, as this level is considered most suitable for planning and implementing health interventions. This is because the sub-district or block level is small enough to allow for effective coordination and implementation of health programs, yet large enough to be representative of the broader community. The sub-district or block level also serves as a crucial link between the community and the district or state level, enabling the effective translation of national health policies into local action.

**Why Each Wrong Option is Incorrect**
* **Option A:** The national level is too broad for setting targets for RCH programs, as it does not account for local variations in health needs and resources.
* **Option B:** The village level is too small for setting targets, as it may not be representative of the broader community and may not have the necessary resources or infrastructure to implement health programs.
* **Option D:** The district level is too high-level for setting targets, as it may not be specific enough to account for local variations in health needs and resources.

**Clinical Pearl / High-Yield Fact**
When conducting a Community Needs Assessment, it's essential to involve local stakeholders, including community leaders, healthcare providers, and service users, to ensure that the health needs and priorities are accurately identified and addressed.

**Correct Answer: C.**