Correct Answer:
D. Islamabad
Correct Answer: Islamabad. Allama Iqbal Open University (AIOU), Pakistan's distance-learning university, is headquartered in Islamabad.
- Karachi: This major city is not the seat of AIOU.
- Lahore: AIOU is not headquartered in this city.
- Rawalpindi: This city, though near Islamabad, is not where AIOU is based.