A. Umar ibn al-Khattab
B. Ali ibn Abi Talib
C. Abu Bakr al-Siddiq
D. Uthman ibn Affan
Answer: Abu Bakr al-Siddiq
Which companion of the Prophet (PBUH) served as the first caliph after his death?
Additional Information: Abu Bakr al-Siddiq was the first caliph after the death of Prophet Muhammad (PBUH) and played a crucial role in the early Muslim community.
Subjects: Famous Islamic Personalities, Islamiyat