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 is considered the first caliph of Islam?
Additional Information: Abu Bakr al-Siddiq was the first caliph following the death of Prophet Muhammad (PBUH).
Subjects: Famous Islamic Personalities, Islamiyat