Original surveys of alienable and disposable lands designate what type of land?

The designation of original surveys of alienable and disposable lands refers specifically to land that is recognized as available for private ownership or use, as opposed to land that is reserved for public use or not subject to private rights at all. Thus, the correct answer indicates land that is not designated for any public purpose or restricted from private ownership.

This contrasts with other types of land, such as those used for public parks or specifically designated for industrial use, which are not classified as alienable and disposable. Therefore, identifying these lands emphasizes their suitability for private rights, making them available for individuals or groups to own, develop, or utilize, reflecting the fundamental principle of land ownership within the context of property law.