Final answer:
The mountains in Greece separated the regions and made it difficult for them to unite under one government, affecting the development of the polis.
Step-by-step explanation:
The geography most affected the development of the polis, or Greek city-states, in option B.
The mountains separated the regions, making it difficult for them to unite under one government.
This geographical feature of Greece resulted in the formation of independent city-states, each with its own government and culture.
Learn more about the impact of geography on the development of Greek city-states