I don't understand the overseas regions part of the quiz. Sint Maarten is an overseas region of the Netherlands, yet it seems to relate to Belgium in the quiz. Suriname is a country in its own right, not an overseas region of any country; same goes for Brazil. And Gibraltar is an overseas region of the UK, which is not even one of the answers on the quiz.
We are asked to name the countries that border the countries that border Andorra. Or in other words, countries that border France or Spain (except Andorra). Spain borders the UK through Gibraltar, and France borders the Netherlands through Sint Marteen.