Chiron donated his immortality to which Titan who tricked Zeus into picking fat-covered bones?

Chiron, the wise centaur known for his healing abilities and knowledge, donated his immortality to Prometheus. This act was significant because Prometheus had previously defied Zeus by stealing fire for humanity, which led to his punishment. The story involving the bones occurs in the context of a competition between Prometheus and Zeus over offerings to the gods; Prometheus tricked Zeus by presenting him with fat-covered bones, which Zeus accepted over the good meat hidden within the innards. This act of trickery highlighted the cunning nature of Prometheus and was a key moment that showcased the relationship dynamics between the Titans and the Olympian gods.

Prometheus' actions and subsequent punishment reinforced themes of sacrifice, defiance against authority, and the consequences of one's choices in Greek mythology, making the connection between Chiron's donation and Prometheus's fate particularly poignant.