**Core Concept**
Trachoma is a chronic keratoconjunctivitis caused by Chlamydia trachomatis, leading to corneal scarring and potentially blindness. Elimination of trachoma is achieved through a comprehensive approach, including antibiotics, surgery, and community-based interventions aimed at improving access to clean water and sanitation.

**Why the Correct Answer is Right**
Nepal was the first country in South East Asia to achieve the global goal of eliminating trachoma as a public health problem, as certified by the World Health Organization (WHO) in 2018. This achievement is a result of sustained efforts by the Nepalese government, international partners, and local communities to implement the SAFE strategy (Surgery for trichiasis, Antibiotics, Facial cleanliness, and Environmental improvement). The introduction of azithromycin, a broad-spectrum antibiotic, has been instrumental in controlling the disease. The successful elimination of trachoma in Nepal serves as a model for other countries in the region.

**Why Each Wrong Option is Incorrect**
**Option A:** India has made significant progress in controlling trachoma, but it has not yet achieved the status of elimination.
**Option C:** Bangladesh has also been actively working to eliminate trachoma, but its progress is not yet comparable to Nepal's.
**Option D:** Pakistan has a high burden of trachoma, and while efforts are underway to control the disease, it has not yet achieved elimination.

**Clinical Pearl / High-Yield Fact**
The SAFE strategy is a critical component of trachoma elimination efforts. Facial cleanliness, particularly among children, is crucial in preventing the transmission of Chlamydia trachomatis. This can be achieved through education and promotion of good hygiene practices, such as regular handwashing and face cleaning.

**✓ Correct Answer: B. Nepal**