which works to solve environmental challenges by raising awareness, fundraising, and influencing…

Brief Explanations:

Non - government agencies (NGOs) are known for their role in environmental advocacy. They operate independently of government structures. NGOs often focus on grassroots efforts such as raising public awareness through campaigns, conducting fundraising activities to support environmental projects (like conservation efforts, clean - up drives, etc.), and influencing policy. They can do this by lobbying governments, providing research - based evidence for policy changes, and mobilizing public opinion. Government agencies have regulatory and administrative roles but may not rely as much on fundraising in the same way. International treaties are agreements between countries and are more about setting binding obligations rather than grassroots - style awareness and fundraising. National laws are legal frameworks created by governments.

Answer:

non - government agencies