As Charlotte Snorkels near the Shoreline,she Notices Large Masses of Something

As Charlotte snorkels near the shoreline,she notices large masses of something green swaying with the surf.She suspects this to be a large plant in the ocean.She collects a sample.Upon closer examination,she discovers that there are no vascular structures to absorb and transport water and nutrients throughout the organism,but there are chloroplasts present in the cells.This organism most likely belongs to kingdom

A) Fungi.
B) Plantae.
C) Animalia.
D) Protista.