✔ Correct Answer: A. Muharram of 9 A.H.
The correct answer to the question “By what date had the Zakat system been fully enforced during the lifetime of the Prophet (P.B.U.H)?” is Muharram of 9 A.H.. This question belongs to Islamic Studies. Practice the related questions below to master this topic for your FPSC, PPSC and NTS tests.