Final answer:
The phrase that exemplifies Anglo-Saxon culture is the one where the king of the Danes acknowledges the visitor's ancestry upon welcoming them to Heorot, reflecting the value of lineage and hospitality in their society.
Step-by-step explanation:
The phrase from the passage that contains a feature of Anglo-Saxon culture is "My lord, the conquering king of the Danes, bids me announce that he knows your ancestry also that he welcomes you here to Heorot". This phrase highlights the importance of genealogy and lineage in Anglo-Saxon culture, which was a key means of establishing identity and social connections. The reference to the welcoming of visitors to Heorot also emphasizes the significance of hospitality and feasting in their society, which served as a means to form alliances and display wealth and status among the Anglo-Saxons.