Final answer:
The line from Chaucer's General Prologue that references the feudal social structure of medieval England is 'His lordship high was in his sovereignty.'
Step-by-step explanation:
A line from Chaucer's General Prologue to The Canterbury Tales that references the feudal social structure of medieval England is:
His lordship high was in his sovereignty
This line highlights the hierarchical structure of the feudal system, with lords in a position of power and authority over their vassals or subjects.
Learn more about feudal social structure