The right option is; C. eukaryotic cells
Like chordates, all invertebrates have eukaryotic cells.
Chordates are animals that have the notochord (backbone); a stiff, dorsal supporting rod, while invertebrates are animals that do not have a backbone such as an annelid, arthropod. All invertebrates have eukaryotic cells like chordates. Eukaryotic cells are cells that contain a true nucleus and membrane bound organelles such as ribosomes, endoplasmic reticulum and mitochondria that perform various functions within the cell.