From "Kubla Kahn" And 'mid these dancing rocks at once and ever It flung up momently the sacred river. Five miles meandering with a mazy motion Through wood and dale the sacred river ran . . . Which sound device in these lines best helps readers understand the course of the sacred river? the consonance between "dancing" and "once" the consonance between "wood" and "sacred" the alliteration "meandering with a mazy motion" the alliteration "river ran"