Pretty sure it's Hydrogenation. :P
I believe the answer is C.
Pop Art uses iconic people or cultural symbols which can be identified as exactly what they are. Abstract Expressionism is not identifiable as a specific things or object, because it is supposed to communicate feelings. Pop Art usually sends a specific message, whereas Abstract Expressionism is art that is up to interpretation.
Answer:
Local Government, Excluding Education and Hospitals
Explanation: