MCQ Answer
A. Hazrat Abu Bakr RA
Correct
Explanation
Hazrat Abu Bakr Siddiq (RA) purchased Hazrat Bilal ibn Rabah (RA) from Umayyah ibn Khalaf and manumitted/freed him.
B. Hazrat Usman RA
C. Hazrat Ali RA
D. None of these
Correct Answer
Hazrat Abu Bakr RA