Final answer:
Transport vesicles bud from the trans Golgi network to fuse with the plasma membrane.
Step-by-step explanation:
The correct answer is a.
Transport vesicles bud from the trans Golgi network to fuse with the plasma membrane. Transport vesicles are responsible for transporting proteins and lipids within the cell.
After leaving the endoplasmic reticulum, the transport vesicles fuse with the trans Golgi network and then move and fuse with the plasma membrane to release their contents outside the cell.
This process is essential for protein and lipid sorting and distribution within the cell.