Most of the countries in International Solar Alliance lie

Correct option is C

The International Solar Alliance (ISA) primarily includes countries located between the Tropic of Cancer and the Tropic of Capricorn. The ISA is an alliance of more than 120 countries, most of them being sunshine countries, which come either completely or partly between the Tropic of Cancer and the Tropic of Capricorn. The primary objective of the alliance is to work for efficient exploitation of solar energy to reduce dependence on fossil fuels. This geographical region is chosen because countries located in this belt receive abundant sunlight throughout the year, making them ideally suited for solar energy production.
Therefore, the correct answer is (c) Between tropic of cancer and Capricorn