Final answer:
Loki's punishment after The Death of Balder in Norse mythology was eternal imprisonment in a cave, where he was bound and subjected to venom dripped onto his face, leading to excruciating pain and causing earthquakes.
Step-by-step explanation:
The punishment of Loki following The Death of Balder is not a simple banishment or a temporary imprisonment, but rather a severe and eternal consequence. Loki's punishment was b) Eternal imprisonment in a cave. According to Norse mythology, after causing the death of Balder, the gods punish Loki by binding him in a cave with the entrails of one of his own sons. Above him, a serpent is positioned to drip venom onto Loki's face. His faithful wife, Sigyn, stays by his side, catching the poison in a bowl to spare him the pain, but when she must empty the bowl, the venom hits Loki, causing him agonizing pain which leads to earthquakes.