Which of the following countries does not have a coastline on the Persian Gulf?

What is the name of the bay that borders the city of Rio de Janeiro? Which of the following countries does not have a coastline on the Baltic Sea? Which country has a coastline on the Caspian Sea? Which of the following countries has a coastline on the Black Sea? Which country has a coastline on the Gulf of Finland? Which country has a coastline on the Black Sea and the Mediterranean Sea? Which country has a coastline on the Adriatic Sea and the Ionian Sea? Which coastal country in Southeast Asia is composed of over 17,000 islands?