That would be Antarctica.
Though some scientists have research bases there, Antaritica has no permanent residents.
Antarctica has no permanent human residence. The only permanent residents are penguins.
In my judgment the only continent visited by scientists would be Antarctica, as there are no permanent residents there.
Antarctica, because it has no permanent residents and no ruler.
Antarctica
Antarctica is the continent with no permanent residents. Although it has temporary research stations with personnel rotating in and out, there is no indigenous population living there.
Antarctica is the continent with no permanent residents except for researchers. The harsh climate and remote location make it inhospitable for permanent human settlement.
Antarctica doesn't have any permanent, human residents.
Antarctica is the only continent that has no indigenous population. While it is inhabited by scientists and support staff in research stations, there are no permanent residents.
Antarctica is the continent with no permanent inhabitants, although it does have temporary residents such as scientists and researchers who work in research stations.
Antarctica, and I think by quite a long shot
There are no countries on the Antarctic continent.