**Core Concept**
The World Health Organization (WHO) has regional offices that oversee health initiatives and policies in different parts of the world, including South-East Asia. The South-East Asia Regional Office (SEARO) is responsible for guiding health priorities and responses in its member countries.

**Why the Correct Answer is Right**
The correct answer is New Delhi, as it is the location of the WHO South-East Asia Regional Office. This office coordinates with member states to address health concerns, implement health policies, and provide technical assistance.

**Why Each Wrong Option is Incorrect**
**Option A:** Not specified, so cannot be evaluated.
**Option B:** Not specified, so cannot be evaluated.
**Option C:** Not specified, so cannot be evaluated.
**Option D:** Not specified, so cannot be evaluated.

**Clinical Pearl / High-Yield Fact**
It's crucial to remember that the WHO regional offices play a vital role in global health governance, and knowing their locations can be relevant for understanding health initiatives and collaborations.

**Correct Answer:** D. New Delhi