Question

Most members of the European Union _____.

only import and export goods using a flexible exchange rate system
only trade goods with neighboring countries
have switched their currencies to the euro
imposed high tariffs on all exports beginning in 1986

Answer 1

The correct answer is "have switched their currencies to the euro"

Most countries have done this, however, there are countries such as Britain who still keep their own currency, in this case the Pound.

Answer 2

have switched their currencies to the euro

The euro is the united currency of the European Union, and it is adopted by 19 of the 28 states of the EU. The currency was born in 1999, but it begin to circulate starting from 2002 in the first twelve member. The other seven state adopted the currency later, the last one was the Lithuania, which adopted the Euro in 2015.