Which One of the Following Is a Key Advantage of Eukaryotic

Which one of the following is a key advantage of eukaryotic cells over prokaryotic cells?

A) Eukaryotic cells have a cell membrane, which allows them to ship materials into and out of the cell.
B) Eukaryotic cells have ribosomes, which allow them to make more complex proteins.
C) Eukaryotic cells have a flexible cytoskeleton, which allows them to change shape and gives them the ability to engulf other materials.
D) Eukaryotic cells have a rigid cytoskeleton, which allows them to withstand greater stress.
E) None of the answer options is correct.