The correct answer is Creon.
Oedipus sends Creon to the oracle at Delphi to learn how to save Thebes. Creon reports that the city can only be saved by finding and punishing the murder of the previous king, Laius.
There are many different ways that this could be answered, but I believe that the answer is B, Safety. This is because self driving cars are programmed to work by following rules e.g. staying in the lines, stopping at the traffic lights etc. Also, they have no emotion so they can't flip out and drive like crazy and can't be rebellious as they aren't programmed like that. However, if they aren't programmed properly there would be havoc and chaos.