Final answer:
The correct juxtaposition in Byron's "She Walks in Beauty" is between the beauty of the woman and the celestial aspects of the night, best represented by option 'a. beauty, stars', which combines the concept of beauty with elements associated with night.
Step-by-step explanation:
The stanza from Byron's "She Walks in Beauty" creates a surprising juxtaposition between the darkness associated with night and the bright, beautiful description of the woman. Rather than contrasting dark with ugly or ominous, Byron intertwines the dark and the bright to enhance the woman's beauty. The surprising juxtaposition discussed in the question is most accurately between beauty and night, which is not an option clearly provided. However, as 'beauty' correlates to the descriptions provided of the woman and 'night' to the dark and bright, the closest correct option by interpretation is 'a. beauty, stars', as it combines the concept of beauty with elements of the night.
Several passages presented feature descriptions of night, dreams, and reflections on beauty through darkness or twilight, often using a natural scenery or celestial imagery to evoke emotion and convey depth. This is particularly evident in references to starry eyes, twilight, moonlit landscapes, and dawn, all contributing to vivid and romantic imagery.