Answer:
The correct answer would bud off or separated from the plasma membrane.
Step-by-step explanation:
Endocytosis is the process of the internalizing the substances or large molecules for transport into the cell. This process includes phagocytosis or cellular eating and pinocytosis.
The material or substance to internalize is surrounded by the plasma membrane and then it buds off inside forming vesicles.
Thus, the correct answer is- budded off or separated from the plasma membrane.