Question

What is the chief effect of this final stanza from "The Soul Selects her own Society"?
I've known her--from an ample nation--
Choose One--
Then--close the Valves of her attention--
Like Stone--
a.
It creates a harmony that stresses how well the speaker knows the soul.
b.
It creates a disharmony that suggests strife in the ample nation.
c.
It creates a disharmony that echoes the unsociable actions of the soul.
d.
It captures the sound of the running water that the valves imply.