Final answer:
The nymph would accept the shepherd's offer if the fleeting enticements promised by the shepherd were enduring and unaffected by time. The shepherd’s idealistic visions are countered by the nymph’s realistic understanding of the world's impermanence and change.
Step-by-step explanation:
The nymph might accept the shepherd's offer in Walter Raleigh's "The Nymph's Reply to the Shepherd" if the promises made by the shepherd were timeless and immune to the effects of change and decay. As Raleigh writes, the enticements offered by the shepherd, like the material joys and youth itself, are transient - 'Soon break, soon wither, soon forgotten: In folly ripe, in reason rotten'. This suggests that the nymph's acceptance would require the shepherd's gifts to be everlasting, enduring beyond the fleeting nature of beauty and life.
Moreover, the nymph's pragmatic view of reality undercuts the idealistic visions presented by the shepherd. Her reply serves as a grounded perspective countering the optimistic promises in the shepherd's song with a more sobering reality governed by time and change. For her to accept, the shepherd would have to offer something beyond the temporary delights of 'the shepherds' swains shall dance and sing For thy delight each May morning', providing assurances of constancy and enduring value that withstand the test of time.