Final answer:
The correct answer is option C) Option 3: The belief in democratic forms of government.
Step-by-step explanation:
The belief that most closely aligns between Ancient Greeks and the modern United States is the belief in democratic forms of government (Option C). The ancient city-state of Athens is known for developing the concept of democracy, where citizens had a direct say in government matters. Although their version of democracy was more direct and excluded women, slaves, and non-citizens, it laid the foundational ideas for later democratic systems.
The United States, on the other hand, adopted a form of representative democracy, known as a republic, where elected officials represent the interests of the citizens. This system of government is informed by both Ancient Greek ideas of citizen participation and the Roman concept of a republic, influencing the American Revolutionary leaders to choose a republic over other forms like monarchy or oligarchy after gaining independence from Britain.