Which companion of the Prophet (PBUH) was known for his eloquence and served as a diplomat?

A. Ali ibn Abi Talib
B. Abu Ubaidah ibn al-Jarrah
C. Uthman ibn Affan
D. Al-Harith ibn al-Simmah

Answer: Ali ibn Abi Talib


Additional Information: Ali ibn Abi Talib was known for his eloquence and served as a trusted diplomat during the time of Prophet Muhammad (PBUH).