Exp) Option a is the correct answer.

The organization that launched the “Nature Solutions Finance Hub for Asia and the Pacific” is the Asian Development Bank (ADB). The ADB unveiled this hub at COP28 with the goal of attracting significant investments in nature-based solutions projects across the Asia Pacific region. It aims to mobilize funding for projects that incorporate nature-based solutions to address climate change and biodiversity loss. The hub aims to attract at least $2 billion in investments.

Source: https://opecfund.org/operations/list/enhancing-outcomes-of-the-nature-solutions-finance-hub-nsfh-for-asia-and-the-pacific#:~:text=The%20proposed%20TA%20grant%20aims,across%20Asia%20and%20the%20Pacific.

https://ndcpartnership.org/knowledge-portal/climate-funds-explorer/nature-solutions-finance-hub-asia-and-pacific#:~:text=The%20Asian%20Development%20Bank%20(ADB,other%20sources%20of%20private%20capital.