Please help me with this question!!!

Answer:
C i think
Explanation:
A. that is the ER , not the chloroplast
B. that is the nucleus, not a vacuole with DNA
D. the cell membrane does not provide rigid support as it is made of millions of smaller molecules that create a flexible and porous container. (fluid mosaic model)
Answer:
Pretty sure the answer is 4.
The cell membrane separates the interior of the cell from the outside and it provides a rigid support for the cell.