eukaryotic cells have developed more specialized functions than prokaryotic cells. what is this referring to?

a. prokaryotic cells do not have a means for movement like eukaryotic cells do

b. prokaryotic cells exist in multicellular organisms and differentiate, but eukaryotic cells do not.

c. eukaryotic cells are larger and have smaller surface area to volume ratios than prokaryotic cells.

d. eukaryotic cells have membrane-bound organelles with specific functions, but prokaryotic cells do not.