The theme best supported is achieving immortality through the perpetuation of one's ideas and influence on others.
The theme best supported by the excerpt is OC. Immortality can be achieved in ways other than physical existence. The passage conveys the idea that one can achieve a form of immortality through the perpetuation of one's ideas, thoughts, and influence in others even after physical death. This notion suggests that a person can live on through the impact they have on others, thereby achieving a sense of immortality.
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