Consider the following countries: 1. Albania 2. Bosnia Herzegovina 3. Croatia 4. Macedonia Which of these countries has/have Adriatic Sea as a boundary?

1. The question asks which of the listed Balkan countries has the Adriatic Sea as a boundary. 2. The Adriatic Sea is a body of water separating the Italian Peninsula from the Balkan Peninsula. 3. Let's check the listed countries: - Albania (1): Has a significant coastline along the Adriatic Sea and the Ionian Sea (which connects to the Adriatic). Yes, it has an Adriatic boundary. - Bosnia Herzegovina (2): Has a very small coastline (about 20 km) on the Adriatic Sea at Neum, separating parts of Croatia's coast. Yes, it technically has an Adriatic boundary. - Croatia (3): Has a long and extensive coastline along the eastern Adriatic Sea. Yes, it has an Adriatic boundary. - Macedonia (4) (now North Macedonia): Is a landlocked country and does not have a coastline on the Adriatic Sea or any other sea. 4. Therefore, Albania (1), Bosnia Herzegovina (2), and Croatia (3) all have the Adriatic Sea as a boundary. 5. This corresponds to option B (1, 2 and 3).