Decipherability means to determine the meaning of. And as it has suffixed to 'able', i.e. Decipherable, it means the one which could be determined like that
The answer is 2. To explain the importance and origin of the state's Diversity Initiative.
Answer:
B (the one you selected)
Explanation:
A is not right since many stories use more than one theme, especially in arcs.
C is not right since the subject is what the story is about, which can not line up with the theme.
D is not right because most real world examples do not do this.