The answer is C. London. London's congestion toll is 11.50 pound for driving in a charging zone between 7:00 AM to 6:00 PM during weekdays. The other cities that charges congestion toll are Oslo, San Francisco, New York, Stockholm, and Singapore.
The Helots were state-owned serfs of the ancient Spartans.
B. Limiting trade with a country punishes it by hurting its economy. (correct for APEX)
The answer you are looking for is D.) articles that exaggerated or manipulated events to shock readers.
For example lets say there was a car crash and the people had minor injuries in your town. Later you see on the morning paper that the people suffered terribly from the crash that they had to be flown to a hospital. That is yellow journalism because the event is exaggerated.