Final answer:
In 'The Giver' by Lois Lowry, Jonas learns that 'release' is a euphemism for being killed, which significantly alters his view of his society.
Step-by-step explanation:
Jonas was very upset when he figured out that to be "released" meant to be killed or euthanized. In the context of the novel ‘The Giver’ by Lois Lowry, 'release' is a euphemism used in Jonas's community to refer to the government-sanctioned ending of a person's life. This realization is a significant turning point in the book, as it changes Jonas's perception of his society and leads him to take drastic actions in response to this harsh reality.