Answer:
C. All cells are surrounded by a cell membrane and a rigid cell wall.
Step-by-step explanation:
All cells have these four parts in common: a plasma membrane, cytoplasm, ribosomes, and DNA. Plasma membrane - also known as cell membrane.That's because all cells are surrounded by a structure called the cell membrane — which, much like the walls of a house, serves as a clear boundary between the cell's internal and external environments. The cell membrane is sometimes also referred to as the plasma membrane.