Which document typically invites public feedback on reform proposals?

The document that typically invites public feedback on reform proposals is the Green Paper. Green Papers are discussion documents published by the government, outlining potential policies or reform ideas and seeking input from the public and stakeholders. This process allows for a broader consultation, ensuring that various perspectives and opinions can be considered before any final decisions are made. The feedback gathered plays a crucial role in shaping subsequent legislation or policies.

In contrast, White Papers generally present more definitive government proposals and often reflect a stage further along in the policy-making process. Yellow papers, while not commonly used in the context of government consultations, might refer to other specialized reports or documents in different fields. The term Blue Book typically refers to documents compiling statistical data or authoritative references, rather than being a vehicle for public consultation on reform ideas. Therefore, the Green Paper stands out as the correct choice for inviting public feedback on reform proposals.