Consider the following pairs:Sea Bordering country1.Adriatic Sea : Albania2.Black Sea : Croatia3.Caspian Sea : Kazakhstan4.Mediterranean Sea : Morocco5.Red Sea : SyriaWhich of the pairs given above are correctly matched?

1. A

   1, 2 and 4 only

   (a) 1, 2 and 4 only. Pair 1 (Adriatic–Albania) and pair 4 (Mediterranean–Morocco) are correct, but pair 2 (Black Sea–Croatia) is not: Croatia fronts the Adriatic, not the Black Sea. So this code is not the key.

2. B

   1, 3 and 4 only

   (b) 1, 3 and 4 only. Albania borders the Adriatic; Kazakhstan borders the Caspian; Morocco borders the Mediterranean (and the Atlantic). Croatia is not a Black Sea state; Syria is Mediterranean, not Red Sea. Those three true pairs are the official key.

3. C

   2 and 5 only

   (c) 2 and 5 only. Both of those pairs are the false ones, so this is not the key.

4. D

   1, 2, 3, 4 and 5

   (d) All five. Two mismatches (Croatia–Black Sea; Syria–Red Sea) kill the all-true code.

Summary. Official key is (b) 1, 3 and 4 only. Walk the map: Albania–Adriatic, Kazakhstan–Caspian, Morocco–Mediterranean. Croatia is Adriatic; Syria is eastern Mediterranean; Red Sea states include Egypt, Sudan, Eritrea, Saudi Arabia, Yemen, Jordan (Aqaba), Israel (Eilat) — not Syria. Honour the stored letter (b).