Final answer:
Stars symbolize solitude and people would cherish them more, indicating human appreciation for rarity. This aligns with Emerson's view of human nature.
Step-by-step explanation:
The study of stars has been an important aspect of human history, with ancient cultures regarding them as symbols of the gods or supernatural forces. In the past, people relied on the stars for navigation and as a way to make sense of the world. If stars only appeared once in a thousand years, people would likely cherish them more, indicating human appreciation for rarity and solitude.
This suggests that Emerson's view of human nature aligns with option a) - stars symbolize solitude and people would cherish them more. Emerson believed in the importance of solitude and self-reliance, and saw nature as a source of truth and inspiration. Therefore, the rarity of stars would heighten their value and significance to individuals seeking solitude and introspection.