Correct Answer:
B. Molvi Tamiz-ud-Din
While Quaid-e-Azam Muhammad Ali Jinnah initially presided, Molvi Tamiz-ud-Din became the President of the first Constituent Assembly of Pakistan after Jinnah's passing. He played a crucial role in the early legislative processes. Liaquat Ali Khan and Khawaja Nazimuddin held other significant governmental roles but not this specific presidency.