Stroke after stroke, stroke after stroke She glides across the water, skin shimmering inches below
Flip.
Push.
An arrow soaring just beneath the surface rises to the top again
Stroke, after stroke, stroke after stroke.

How do the short lines most clearly contribute to the meaning of the poem?

A. The short lines reflect the fact that swimming is physically exhausting.
B. The short lines slow the rhythm of the poem to show the swimmer's speed.
C. The short lines create a mental picture, making the poem more interesting.
D. The short lines emphasize the swimmer's quick, efficient movements.