Final answer:
The cowardly behavior of Beowulf's men as he faced the dragon violated the Anglo-Saxon warrior code of bravery and courage in battle.
Step-by-step explanation:
The Anglo-Saxon warrior code that was violated by the cowardly behavior of individuals as Beowulf faced the dragon was b) Bravery and courage in battle. This code was fundamental in Germanic societies where warfare was a way to earn social prestige and where the relationship between a king and his warriors was based on mutual loyalty and respect. The expectation was that warriors would stand by their leader in battle. The failure of Beowulf's men to do so, with the exception of Wiglaf, highlights a breach of this essential warrior code.
Additionally, this code was part of a broader cultural and social system that valued personal honor and reciprocal loyalty. The breaking of this code by Beowulf's men reveals not only personal cowardice but also a failure in the deep-seated societal expectation of standing bravely with one's lord.