The correct answer is All of these countries, lying fully or partially between Tropic of Cancer and Equator. International Solar Alliance (ISA) • The launch of the International Solar Alliance (ISA) was announced by H.E. Mr. Narendra Modi, the Hon’ble Prime Minister of India and H.E. Mr. Francois Hollande, former Hon’ble President of France on 30th November 2015, at the 21st session of the United Nations Climate Change Conference of the Parties (COP-21) in Paris, France. Hence, option 3 and 4 is correct. • The International Solar Alliance (ISA) was conceived as a coalition of solar-resource-rich countries (which lie either completely or partly between the Tropic of Cancer and the Tropic of Capricorn) to address their special energy needs. Hence, option 2 is incorrect. • The ISA will provide a dedicated platform for cooperation among solar-resource-rich countries, through which the global community, including governments, bilateral and multilateral organizations, corporates, industry, and other stakeholders, can contribute to help achieve the common goal of increasing the use and quality of solar energy in meeting energy needs of prospective ISA member countries in a safe, convenient, affordable, equitable and sustainable manner. • ISA has been conceived as to be an action-oriented, member-driven, collaborative platform for increased deployment of solar energy technologies to enhance energy security and sustainable development and to improve access to energy in developing member countries. • The ISA has 121 sun-belt countries that lie between the two tropics as its prospective member countries and currently boasts a membership of 86 countries globally. Hence, option 1 is correct. • ISA will not duplicate or replicate the efforts that others (like International Renewable Energy Agency (IRENA), Renewable Energy and Energy Efficiency Partnership (REEEP), International Energy Agency (IEA), Renewable Energy Policy Network for the 21st Century (REN21), United Nations bodies, bilateral organizations, etc.) are currently engaged in, but will establish networks and develop synergies with them and supplement their efforts in a sustainable and focused manner.