In what way is a cell membrane selective?

The membrane is semipermeable or selectively permeable because it does not permeate all molecules.

Explanation:

Permeability is, in fact, the ease with which a dissolved particle passes through the membrane, which depends on both the properties of the particles and the properties of the membrane itself.

The cell membrane has the role of a barrier that separates the intracellular space from the extracellular fluid, but at the same time, it must enable the selective passage of molecules and ions into and out of the cell.

option c is the correct answer.