According to the text, what is the main source of funding for NAWS?

The main source of funding for NAWS, which stands for Narcotics Anonymous World Services, primarily comes from literature sales and member contributions. This reflects the grassroots nature of the organization, where the community plays a vital role in sustaining its operations through direct support rather than relying on external funding options.

Literature sales include materials that support recovery practices and promote the message of Narcotics Anonymous. These sales are essential as they not only generate revenue but also further spread the organization's message among individuals seeking help. Member contributions complement this funding by providing a consistent source of income, reinforcing the idea that members of the community are invested in the success and sustainability of NAWS.

Other options such as sponsorship from treatment organizations, government grants, or external donations do not form the foundation of NAWS's financial structure. The organization has chosen to maintain financial independence to uphold its principles and ensure that it remains self-sustaining and focused on serving its members rather than being dependent on outside funding sources.