The correct answer is (d).
The Fourth United Nations Conference on the Least Developed Countries was held in Nairobi, Kenya from 20 to 25 May 2011. The conference was attended by representatives from 193 countries, including 48 least developed countries. The main objective of the conference was to review the progress made by least developed countries in implementing the Programme of Action for the Least Developed Countries for the Decade 2001-2010 and to adopt a new Programme of Action for the Least Developed Countries for the Decade 2011-2020.
The conference adopted the Nairobi Declaration on the Least Developed Countries, which reaffirmed the commitment of the international community to the sustainable development of least developed countries. The declaration also called for the implementation of a number of specific measures to support the development of least developed countries, including:
- Increased financial assistance
- Enhanced market access
- Technical assistance
- Debt relief
- Capacity building
The Nairobi Declaration was a significant achievement for least developed countries. It provided a renewed commitment from the international community to support their development and it set out a number of concrete measures that could be taken to achieve this goal.
The options (a), (b), and (c) are incorrect because they are not the cities where the Fourth United Nations Conference on the Least Developed Countries was held.