Latvia, a country in the Baltic region of Northern Europe, shares a border with four countries. Here`s a breakdown for each option:

Option 1: Russia – It`s incorrect as Latvia does share a border with Russia on the east.

Option 2: Estonia – This is also incorrect. Latvia does have a border with Estonia to the north.

Option 3: Lithuania – Latvia shares its southern border with Lithuania, which means this option is wrong too.

Option 4: Poland – The correct answer. Even though Latvia and Poland are both in Northern Europe, they do not share a common border. Latvia is bordered by Estonia to the north, Russia to the east, and Lithuania to the south. Meanwhile, Poland is located to the south of Lithuania and does not directly connect with Latvia.