The correct option is C Volvox, Spirogyra, Chlamydomonas
Chlamydomonas, Volvox, Ulothrix, Spirogyra and Chara are green algae.
Ectocarpus, Dictyota, Laminaria, Sargassum and Fucus are all brown algae.
Polysiphonia, Porphyra, Gracilaria and Gelidium are members of red algae.