Answer the following question given this paragraph: 

Second, plant cells have a cell wall , while animal cells do not ( Figure below ). The cell wall surrounds the plasma membrane but does not keep substances from entering or leaving the cell. A cell wall gives the plant cell strength and protection.


Q: What gives the plant cell strength and protection?

 Choices:

- the protons

- the cell nucleus

- the genes

- a cell wall

A:
a cell wall
