What is the function of the plasma membrane? a Sorts proteins and then packs them into vesicles b It is a flexible boundary outside of the cell wall c Protection for the plant cell d It allows nutrients to enter the animal cell and wastes to be removed

The correct option is d

Explanation:

Plasma membrane (or cell membrane) is a semipermeable or selectively permeable barrier that regulates what goes in and out of the cell by keeping toxic substances out of the cell while allowing nutrients, ions and some metabolic products inside the cell.

This membrane surrounds all the content/organelle inside (cytoplasm and nucleoplasm) of the cell.

d. planting trees

the trees take in carbon to make oxygen.