The sights that moved him (Prince Siddhartha Gautama) were four in number. While out hunting, he chanced upon:
These sights of suffering and renunciation made him leave his royal life to seek enlightenment.
Source: The Sermon at Benares, Introduction
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The question is straightforward — it asks you to identify the four sights from the introductory passage. Always list all four clearly; missing even one may cost half a mark. Use the exact terms from the text ("sick man," "aged man," "funeral procession," "monk begging for alms"). A brief concluding line about the impact earns full marks neatly.