Answer: Paraguay
Notes: Paraguay has become the 100th full member of the International Solar Alliance (ISA) by officially handing over its Instrument of Ratification in New Delhi. The ISA, co-founded by India and France during the 2015 COP21, promotes global solar energy deployment. The alliance now has 119 signatories, with 100 ratified members. The ISA aims to implement the Paris Climate Agreement through extensive solar energy adoption.
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