Which property of system options allows settings to remain until changed?

The global property of system options allows settings to remain in effect until explicitly changed by the user or overridden. When a system option is set globally, it affects the entire SAS session, and any subsequent procedures or steps will utilize this setting unless specified otherwise. This means that the global settings persist across different parts of your program or different sessions, providing a consistent environment as long as the settings are not altered.

In contrast, temporary settings are meant to be short-lived and only applicable for the duration of a specific session or until the end of the program. Local settings apply only within a specific scope, such as within a single DATA step or procedure, making them unsuitable for maintaining options across the entire session. Permanent settings, while they may sound similar to global options, are not the correct choice here, as they typically refer to settings that are saved in a configuration file and used across sessions but do not define how options persist in the context of a single session.