Correct Answer:
C. Government of Punjab
As this Act is a provincial legislation, the responsibility for administrative functions, such as updating the list of essential goods, falls to the provincial government. Therefore, the Government of Punjab (C) is responsible for this task. This ensures the list remains relevant to the province's specific economic conditions and consumer needs. The Federal Government (A) handles national matters, Local Governments (B) implement policies, and Courts (D) interpret laws, none of which are responsible for updating such lists.