A. Umar ibn al-Khattab
B. Ali ibn Abi Talib
C. Abu Bakr al-Siddiq
D. Uthman ibn Affan
Answer: Abu Bakr al-Siddiq
Who was the first caliph of Islam after the death of Prophet Muhammad (PBUH)?
Additional Information: Abu Bakr al-Siddiq was the first caliph of Islam after Prophet Muhammad's death.
Subjects: Famous Islamic Personalities, Islamiyat