U.S. Congress and Anciet Athens have a very common similarity of being both run by elected officials are run directly by the citizens.
Option B
Step-by-step explanation:
The Congress of United State and Ancient Athenian, The Stoa Consortium, have very much similar democratic republican policy, which ensures that they are being run by elected officials and thereby are run directly by the citizens.
Both of them supported democracy and hence, is considered as "rule by the people", where the government is being run by the people of the land who chooses elective representative to serve the purpose of their representation on their behalf.