Final answer:
Marie de France composed the medieval narrative poem Lanval, which explores themes of chivalry and courtly love.
Step-by-step explanation:
Marie de France composed the medieval narrative poem Lanval.
Lanval, a lai written by Marie de France in the 12th century, is one of her most famous works. The story revolves around the character Lanval, one of King Arthur's knights, who receives a supernatural gift from a fairy mistress. The tale explores themes of chivalry, loyalty, and the tension between earthly love and knightly duty, illustrating the complexities of courtly relationships during the medieval period.
Marie de France is hailed as one of the earliest known female poets writing in the vernacular, and her contributions to Arthurian legend and medieval literature remain significant.