Question

____ was the prosperous church
smyrna
thyatira
sardis
pergamum

Explanation:

In the New Testament, Sardis was described as a church that had a reputation of being alive but was actually dead in a spiritual sense, yet it was once prosperous. The other churches - Smyrna was poor but spiritually rich, Thyatira had some good deeds but also false teachings, and Pergamum had a mixed - situation with some compromises.

Answer:

C. Sardis