Respuesta :

Hello!

Theodora was an empress, whose husband was the Emperor of the Byzantine Empire.
That makes answer D. [Empress of the Byzantine Empire] an unlogical answer since she only helped advance the Empire alongside her husband. 

Answer B. [
Roman mosaic artist] is also incorrect. 
It was said that for a time, she made her living as a wool spinner. 
So, she did not have time to become an actual artist. 
This answer often is mistaken to be correct because she was represented in a mosaic portrait in the Church of San Vitale in Ravenna

Answer C. [
Architect of the Hagia Sophia] is incorrect.
because it was directed
under the direction of the Byzantine emperor Justinian I, her husband.

Your correct answer is A. [Protest leader in the Nika Rebellion]

Hope this helps!