Answer:
B. Both avoided centralizing political power in the hands of one person.
Step-by-step explanation:
This is the statement that best describes a similarity between the political systems in ancient Greece and the Roman Republic. Both systems avoided centralizing power in the hands of one person. In the case of Ancient Greece, there was no central government. Each city-state had its own type of government, with no central power. In the case of the Roman Republic, various institutions, such as the Senate, allowed government to be shared.