The enharmonic of Db is?
A. E
B. D sharp
C. C
D. C sharp

Answerborromini;

Iagree with you and think that it is d.) as well. 

hope this !

The options for this question is 
a.) a private building used for religious purposes
b.) a stadium used for athletic events, chariot racing, and acrobatics
c.) a central building surrounded by religious and governmental buildings
d.) an open space in a town used as a central gathering place or event