সঠিক উত্তর হচ্ছে: লিথুয়ানিয়া
ব্যাখ্যা: Lithuania is an EU member state which joined the Eurozone by adopting the euro on 1 January 2015. This made it the last of the three Baltic states to adopt the euro, after Estonia (2011) and Latvia (2014). Before then, its currency, the litas, was pegged to the euro at 3.4528 litas to 1 euro.