In prokaryotes, the term "prokaryotic fission" specifically refers to
a. asexual reproduction.
b. the attachment of replicated dna to the plasma membrane.
c. the growth phase of the cell cycle.
d. the addition of a new plasma membrane between what will become two daughter cells.

Because some materials can come in and some materials must stay out

Explanation:

Cell membrane is a structure that covers or bounds the cytoplasmic layer of every living cell. It is made up of mostly lipids. According to this question, it is regarded as selectively permeable. This means that it selects what goes into the cell and what comes out.

The cell membrane is capable of this because of its amphipathic nature i.e contains both hydrophilic and hydrophobic regions. Because the cell membrane controls what goes into the cell and what comes out of the cell, it is referred to as selectively permeable as some materials can come in and some materials must stay out.