Final answer:
The line from 'A Hymn to the Evening' that contains a metaphor is 'and draws the sable curtains of the night.'
Step-by-step explanation:
The line from 'A Hymn to the Evening' that contains a metaphor is option b: 'and draws the sable curtains of the night.'
A metaphor is a figure of speech that compares two unrelated things by describing one thing as if it were another. In this line, the speaker is comparing the setting of the sun to the drawing of curtains, using 'sable curtains' as a metaphor for the darkness of night.
Learn more about Metaphors in poetry