Final answer:
The best label for the use of myth to interpret the meaning of Athena grabbing Achilles by the hair to restrain him is metaphor.
Step-by-step explanation:
The best label for the use of myth to interpret the meaning of Athena grabbing Achilles by the hair to restrain him is metaphor. Just as the myth unfolds, the scene of Athena grabbing Achilles by the hair symbolizes the power struggle and tension between them.