✔ Correct Answer: B. Hazrat Dihyah bin Khalifah Al-Kalbi (RA)
The correct answer to the question “Which Companion (RA) delivered the Holy Prophet's (ﷺ) letter to the ruler of Busra?” is Hazrat Dihyah bin Khalifah Al-Kalbi (RA). This question belongs to Islamic Studies. Practice the related questions below to master this topic for your FPSC, PPSC and NTS tests.