I. Which country does not use the euro as its currency?

O Germany
O France
• Denmark
O Italy

To find out which country does not use the euro as its currency, O Germany, O France, • Denmark, O Italy, you need to refer to reliable sources such as websites, books, or other references about currency. Alternatively, you can also use a search engine to find the answer.

In this case, the correct answer is Denmark. Denmark does not use the euro as its currency. Instead, Denmark uses the Danish krone (DKK) as its official currency.