Every cell is surrounded by a thin membrane. What is the main function of this cell membrane? A.
to protect the cell from invasion by bacteria and viruses
B.
to allow each cell to form connections with other cells
C.
to limit the size of the cell and keep the shape of the cell the same
D.
to separate the inside of the cell from the outside environment

The main function of the cell membrane is to protect the cell from the outer environment.

The answer is D.) to separate the inside of the cell from the outside environment

Explanation:

Originally Answered: Is it true that once you stop caring/disappear, they notice and come back? Yes, in some cases it's true but not in all. There is a saying “ You will know the value of the thing once it goes away from your life”. This actually applies in many of the situations. I think this