To provide an accurate answer, I need to know what structure is labeled "N" in your plant cell diagram. However, I can give you a brief description of each of the functions you've listed:
a. Package and sort proteins - This is the function of the Golgi apparatus.
b. Destroy wastes - This function is typically associated with lysosomes, but also to some extent with peroxisomes.
c. Give the cell structural support - This is primarily the function of the cell wall in plant cells.
d. Control all activities of the cell - This function is performed by the nucleus.
If you can identify the structure labeled "N," I could help you determine which answer option (a, b, c, or d) corresponds to it.