If this

Be but vain belief, yet, oh! how oft,
In darkness, and amid the many shapes
Of joyless day-light; when the fretful stir
Unprofitable, and the fever of the world,
Have hung upon the beatings of my heart,
How oft, in spirit, have I turned to thee
O sylvan Wye! Thou wanderer through the woods,
How often has my spirit turned to thee!

What poetic device or quality makes this poem closed form?

A) blank verse structure
B) use of enjambment
C) inclusion of end-stopped lines
D) repeated use of near-end rhymes
E) abundant alliteration, assonance, and consonance

C) inclusion of end-stopped lines

C) inclusion of end-stopped lines