Answer the following question given this paragraph: 

The cell wall is a rigid layer that surrounds the cell membrane of a plant cell. It’s made mainly of the complex carbohydrate called cellulose. The cell wall supports and protects the cell. The cell wall isn’t solid like a brick wall. It has tiny holes in it called pores. The pores let water, nutrients, and other substances move into and out of the cell.


Q: What rigid layer surrounds the cell membrane of a plant cell?

 Choices:

- bark

- epidermis

- cuticle

- cell wall

A:
cell wall
