Final answer:
King Negus welcomed the Muslims with open arms and provided them with protection when he heard that they had not committed any crimes.
Step-by-step explanation:
When King Negus heard that the Muslims had not killed anyone, stolen no property, and committed no crimes, he welcomed them with open arms and provided them with protection (A). In the Christian Kingdom of Aksum, he allowed the Muslims to practice their faith under his shelter until they were able to return to Muhammad and emigrate to Medina.