How do the themes of anthem reveal objectivism's philosophical concepts? check all that apply. equality 7-2521's inner thoughts show objectivism's belief in the subjective nature of the world. equality 7-2521's break from collectivism highlights objectivism's belief in individualism and self-interest as essential. equality 7-2521's criticism of a collectivist society highlights objectivism's belief that an individual's unique contributions to society determine his value as a man. equality 7-2521's discovery that mankind lost its greatest technological advancements as collectivism increased highlights objectivism's belief that individualism is the key to progress. equality 7-2521's determination to use his mind as a "searchlight that can find the truth" highlights objectivism's belief that reason must be used to discover knowledge.