Final answer:
Witnessing an eclipse challenges preconceived notions and expands understanding of the natural world, as it reveals a realm of beauty and mystery beyond everyday knowledge. So, the correct option is (a) Dillard's experience of witnessing an eclipse challenged her preconceived notions about the natural world, revealing a realm of beauty and mystery that went beyond her everyday understanding.
Step-by-step explanation:
The statement "what you see in an eclipse...entirely different from what you know" is best captured by option: (a) Dillard's experience of witnessing an eclipse challenged her preconceived notions about the natural world, revealing a realm of beauty and mystery that went beyond her everyday understanding. Annie Dillard's essay "Total Eclipse" reflects on her personal encounter with a solar eclipse. In this context, the eclipse serves as a metaphor for a profound shift in perception and understanding. Dillard describes how the experience defied her expectations, prompting a reevaluation of her understanding of the natural world. The option (a) encapsulates the idea that witnessing the eclipse goes beyond mere knowledge, introducing a sense of mystery and beauty that transcends everyday understanding.