Which of the following displays burial art on the exterior a. the san vitale basilica in ravenna b. christian basilicas c. the hagia sophia d. early christian sarcophagi

The best answer is, D. 

Early Christian sarcophagi are known for the ornate, beautiful sculpture that decorates the exterior of the stone. This was done not only for religious purposes, as these sculptures often told biblical stories, but also for cultural ones. Many who lived in Roman territories would display the sarcophagi as symbols of status and recognition of the person's life.