**Core Concept**
The National Rural Health Mission (NRHM) is a government initiative aimed at improving rural healthcare in India. It focuses on increasing access to healthcare services, improving healthcare infrastructure, and enhancing the quality of healthcare.

**Why the Correct Answer is Right**
NRHM was launched by the Government of India in 2005 as a response to the health inequities and disparities in rural areas. The mission aimed to strengthen the rural healthcare system by improving infrastructure, increasing the number of healthcare professionals, and enhancing the quality of healthcare services. The NRHM also focused on reducing infant and maternal mortality rates, improving sanitation and hygiene, and promoting preventive and curative healthcare services.

**Why Each Wrong Option is Incorrect**
**Option A:** NRHM was not started in 2000, as this was before the mission was launched.
**Option B:** NRHM was not started by the World Health Organization (WHO), but rather by the Government of India.
**Option C:** NRHM was not started in 2010, as this was after the mission was already underway.

**Clinical Pearl / High-Yield Fact**
NRHM was a significant step towards improving rural healthcare in India, but its impact was limited by various challenges, including inadequate funding, inadequate infrastructure, and inadequate personnel.

**Correct Answer: C. 2005**