Final answer:
The physical geography of Greece, characterized by mountainous terrain and extensive coastline, led the Ancient Greeks to form independent city-states and become excellent sailors, using ships for transportation between cities.
Step-by-step explanation:
The physical geography of Greece had significant influence on the lives of the Ancient Greeks. Greece's mountainous terrain divided the land into distinct regions, preventing the formation of a unified empire, but rather, encouraging the development of independent city-states.
Aside from that, Greece's extensive coastline, which includes many islands and peninsulas, enhanced their interaction with the wider world. This particular geographic feature, coupled with its proximity to the sea, led the Ancient Greeks to become excellent sailors and foster a thriving trade system by sea. Therefore, the correct answer is D. They became excellent sailors and used ships to transport goods between cities.
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