Final answer:
The Arthurian story includes additions such as The Round Table, the sword in the stone, Lancelot, chivalry, courtly love, and the quest for the Holy Grail, all elements that shaped the legendary narrative.
Step-by-step explanation:
The Arthurian story has seen many additions over time. Among these are elements like The Round Table, a symbol of equality among knights and a central feature of Arthur's court, and the sword in the stone, a legendary motif from the tale of Arthur's proof of lineage and right to rule. Lancelot, one of the most famous knights of the Round Table, was a later addition to the stories, brought into the narrative to add complexity to the tale with his skills and his tragic love affair.
Chivalry and courtly love were concepts that infused the medieval ethos represented in the Arthurian legends. Chivalry embodied the knightly ideals of honor, bravery, and service, while courtly love involved romantic devotion, often unrequited or tragically thwarted, a theme deeply explored in stories involving Guinevere and Lancelot. The quest for the Holy Grail, a symbol of divine grace and ultimate achievement, is another storied addition that conveys the spiritual and adventurous aspects of the Arthurian legend.