Sikkim has won national recognition for its efforts in:

Sikkim has won national recognition for its efforts in cleanliness and sanitation. In 2016, the state was awarded the Swachh Bharat Abhiyan (Clean India Mission) award for being the cleanest state in India. The state has also been praised for its efforts to promote ecotourism and sustainable development.

Here is a brief explanation of each option:

• Cleanliness and sanitation: Sikkim has made significant progress in improving cleanliness and sanitation in recent years. The state has launched a number of initiatives to promote cleanliness, including the construction of public toilets, the distribution of free sanitary napkins to women, and the launch of a cleanliness awareness campaign. As a result of these efforts, Sikkim has seen a significant decrease in open defecation and an increase in the number of people using toilets.
• Ecotourism: Sikkim is a popular destination for ecotourism. The state has a number of natural attractions, including mountains, forests, and rivers. Sikkim has also taken steps to promote ecotourism, such as developing ecotourism infrastructure and training local people in ecotourism skills.
• Urban development: Sikkim is a rapidly developing state. The state government has launched a number of initiatives to promote urban development, including the construction of new roads, bridges, and schools. The state government has also taken steps to improve the quality of life in urban areas, such as by providing clean water and sanitation.
• Disaster preparedness: Sikkim is a state that is prone to natural disasters, such as earthquakes and landslides. The state government has taken steps to improve disaster preparedness, such as by developing early warning systems and training people in disaster response.