The correct option is D Chlamydomonas
Prokaryotic ribosomes and eukaryotic organelle ribosomes are of 70S type made up of two subunits, one larger subunit (50S) and one smaller subunit (30S). The Chlamydomonas is a eukaryotic unicellular organisms belonging to kingdom Protista. It possess eukaryotic 80S type of ribosomes.