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A.
Baltic Sea
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B.
Black Sea
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C.
Mediterranean Sea
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D.
North Sea
Correct Option: AExplanation:
The Baltic Sea forms Poland's northern border. It is a marginal sea of the Atlantic Ocean, enclosed by the Scandinavian Peninsula, the Baltic countries, and Central Europe. The Baltic Sea is essential for Poland's maritime trade, fishing industry, and tourism, offering beautiful coastal landscapes and recreational activities.