Is Joshua's reasoning sound? No, Joshua's reasoning is not sound because he hasn't asked every member of the community whether they benefit from these creators' works.

Yes, Joshua's reasoning is sound because Joshua is a member of the community who benefits from the library's services.

Yes, Joshua's reasoning is sound because it uses a valid source to show that the library's reduced budget will affect people whose work benefits the whole community.

No, Joshua's reasoning is not sound because Library Director Sarah Tomlinson is not an expert on library funding.