Final answer:
The claim that King Hrothgar is the king of Norway and all the Norse people is false. Hrothgar is a legendary character from Beowulf, not a historic ruler like King Gorm or Harald Bluetooth who are mentioned on the Jelling runestones.
Step-by-step explanation:
The statement that King Hrothgar is the king of Norway and all the Norse people is false. King Hrothgar is a character from the Old English epic poem Beowulf, and while he is described as the king of the Danes, the historical record suggests otherwise. The runestones at Jelling in Denmark, such as the one commissioned by Harald Bluetooth, indicate the rulers of Denmark and Norway during the Viking Age. These runestones mention King Gorm and his son Harald, who united Denmark and Norway under his rule and converted the Danes to Christianity. Hrothgar, as a legendary figure, does not fit into the historical narrative of actual Norse monarchs like Gorm and Harald.