## Core Concept
The National Rural Health Mission (NRHM) is a program launched by the Indian government to strengthen rural healthcare infrastructure. It focuses on providing accessible, affordable, and equitable healthcare services to rural populations. A key component of NRHM involves integrating and strengthening rural health services.

## Why the Correct Answer is Right
The correct answer involves the main goal and strategy of NRHM, which includes the creation of a robust healthcare system in rural areas. This encompasses infrastructure development, ensuring a workforce of skilled and trained health professionals, and providing essential health services. One of the pivotal strategies under NRHM is the promotion of **Reproductive and Child Health (RCH)**, along with addressing communicable and non-communicable diseases.

## Why Each Wrong Option is Incorrect
- **Option A:** This option is incorrect because, although it might relate to health services, it does not accurately represent the comprehensive approach of NRHM.
- **Option B:** This option does not correctly capture the essence of NRHM's focus areas, which are broader than just one aspect of healthcare.
- **Option C:** This option might seem plausible but does not fully encapsulate the mission's scope, which includes but is not limited to, specific programs or health initiatives.

## Clinical Pearl / High-Yield Fact
A crucial aspect of NRHM is its emphasis on **RCH services**, aiming to reduce maternal and infant mortality rates through improved access to healthcare services. Additionally, the program focuses on strengthening the **ASHA (Accredited Social Health Activist) worker** cadre, who act as a bridge between the community and the public health system.

## Correct Answer Line
**Correct Answer: D. Reproductive and Child Health.**