**Core Concept**
The National Rural Health Mission (NRHM) aims to improve rural healthcare by strengthening infrastructure, enhancing services, and promoting community participation. **Rural health** is a significant concern in developing countries, and NRHM addresses this through various initiatives. The mission focuses on **health system strengthening** and **service delivery**.

**Why the Correct Answer is Right**
Since the correct answer is not provided, let's discuss the general objectives of NRHM, which include improving **access to healthcare**, **reducing child and maternal mortality**, and **promoting community involvement**. These goals are achieved through **infrastructure development**, **training of healthcare professionals**, and **encouraging public-private partnerships**.

**Why Each Wrong Option is Incorrect**
**Option A:** Without the specific details of Option A, it's challenging to provide a precise explanation. However, if it relates to **improving healthcare infrastructure**, it would be a correct objective of NRHM.
**Option B:** Similarly, without specifics, if Option B involves **enhancing community participation**, it aligns with NRHM's goals.
**Option C:** If Option C pertains to **reducing rural-urban health disparities**, it would be consistent with NRHM's objectives.
**Option D:** Assuming Option D discusses **promoting AYUSH (Ayurveda, Yoga, Unani, Siddha, and Homeopathy)**, it could be seen as part of NRHM's strategy to integrate traditional medicine into mainstream healthcare.

**Clinical Pearl / High-Yield Fact**
A key aspect of NRHM is its focus on **reducing maternal and child mortality** through various interventions, including **immunization programs** and **antenatal care**. This is crucial for improving **rural health outcomes**.

**Correct Answer:** Correct Answer: D. Promoting AYUSH.