Correct Answer:
B. Iskander Mirza
The question identifies the first President of Pakistan. Iskander Mirza assumed this office on March 23, 1956, when Pakistan transitioned from a dominion to an Islamic Republic with the adoption of its first constitution. Prior to this, he served as the last Governor-General.
- Liaquat Ali Khan was Pakistan's first Prime Minister.
- Ayub Khan became the second President after Mirza.
- Muhammad Ali Jinnah was the founder of Pakistan and its first Governor-General, but not President.
This distinction highlights the constitutional evolution of Pakistan's leadership structure.