Final answer:
The similarities between Greek city-states included a common language and shared religious and cultural traditions, whereas their differences lay in their distinct forms of government and architectural styles as well as trade practices.
Step-by-step explanation:
The question asks for the identification of two similarities and two differences between Greek city-states. Based on historical records, option B) Similar forms of government, cultural traditions; differing trade practices, architectural styles provides an accurate representation of Greek city-states.
All Greek city-states shared a common language and religion, as well as cultural traditions such as political institutions and participation in Panhellenic festivals like the Olympics. Despite these commonalities, there were variations among the city-states, such as different types of political systems, including democracy in Athens and oligarchy in Sparta, as well as distinct architectural styles and practices in trade.