International Solar Alliance (ISA) is the alliance of countries most of which lie partially or completely-

Correct option is C

The International Solar Alliance (ISA) is an alliance of countries, most of which lie between the Tropic of Cancer and the Tropic of Capricorn. The ISA aims to promote solar energy among the countries that receive abundant sunlight due to their geographical location in the tropical region.
Information Booster:
1. International Solar Alliance (ISA) was launched in 2015 to promote the use of solar energy and to develop efficient solar energy solutions.
2. It primarily focuses on countries located in the tropical region, which is the area between the Tropic of Cancer (23.5°N) and the Tropic of Capricorn (23.5°S).
3. These countries receive the highest solar insolation, making them ideal for large-scale solar energy projects.
4. The alliance is open to all member countries of the United Nations, but its focus is on countries in the tropics.
Additional Information
· (a) Above the Tropic of Cancer: Incorrect, as most member countries are situated within the tropical zone, not above the Tropic of Cancer.
· (b) Below the Tropic of Capricorn: Incorrect, as the focus is on countries between the two tropics.
· (d) Southern hemisphere: Incorrect, as the alliance covers countries in both the Northern and Southern Hemispheres, primarily in the tropical region.