As of June 6, 2025, no significant global agreement titled ``Paris Accord 2.0," ``Global Climate Change Act," ``Kyoto Protocol 2.0," or ``Green Energy Partnership" was signed in 2025 to reduce carbon emissions. The Paris Agreement, signed in 2015, remains the primary global framework for climate action, with commitments updated through Nationally Determined Contributions (NDCs). The Kyoto Protocol, effective from 1997, had amendments like the Doha Amendment, but no ``Kyoto Protocol 2.0" was signed in 2025. The other options do not correspond to recognized international agreements in 2025.