Final answer:
Priam supplicates Achilles with the help of Hermes who guides him to Achilles' tent, emphasizing the combination of mortal sorrow and divine will in Greek epics.
Step-by-step explanation:
Priam is able to supplicate Achilles through the assistance of a divine guide. The correct answer to how Priam gets into Achilles' camp to supplicate him is that he relies on Hermes to guide him safely to Achilles' tent. This act of supplication is a significant moment in the narrative, showcasing the merging of human grief and divine intervention within the epic tradition of ancient Greek storytelling.