On a Hike,Cheryl Notices Some Flat Green Plants Clinging to the Side

On a hike,Cheryl notices some flat green plants clinging to the side of a damp rock.She brings a few of these flat but leaf-shaped plants back to the lab to examine under the microscope and determines that these plants are only a few cells thick and have no vascular tissues like xylem and phloem.They appear to be absorbing water directly through their surfaces.These little plants are probably

A) angiosperms.
B) aquatic algae.
C) bryophytes.
D) gymnosperms.