Correct Answer:
A. Mirpur District, AJ&K
The Mangla Dam is a crucial multipurpose dam located on the River Jhelum. Its precise geographical location is within the Mirpur District of Azad Jammu & Kashmir (AJ&K). This dam plays a vital role in Pakistan's water and power infrastructure, providing irrigation, flood control, and hydroelectric power generation. The other options, such as Haripur District or Muzaffarabad District, are incorrect as they do not correspond to the actual site of the Mangla Dam.