**Core Concept**
The Anganwadi services are a part of the Integrated Child Development Services (ICDS) program, aiming to provide comprehensive care to children, pregnant women, and lactating mothers in rural and tribal areas. The program focuses on improving the nutritional and health status of these populations.

**Why the Correct Answer is Right**
In tribal areas, the population covered by Anganwadi services is typically larger due to the dispersed nature of settlements and the need for broader outreach. This is because the ICDS program aims to provide services to all children in the 0-6 age group, pregnant women, and lactating mothers, regardless of their geographical location. The Anganwadi workers are trained to provide health, nutrition, and education services to these populations, often in remote and hard-to-reach areas.

**Why Each Wrong Option is Incorrect**
* **Option A:** This option is likely incorrect as it does not take into account the specific needs and circumstances of tribal areas.
* **Option B:** This option may be incorrect as it may not accurately reflect the population coverage in tribal areas, which often require broader outreach.
* **Option D:** This option is likely incorrect as it may not account for the unique challenges and requirements of providing services in tribal areas.

**Clinical Pearl / High-Yield Fact**
In tribal areas, Anganwadi services often play a critical role in bridging the gap in healthcare access and improving the health outcomes of vulnerable populations.

**Correct Answer: C. 600**