Among the countries listed:
B. Kuwait is not an island; it is located in the Middle East, bordering Iraq and Saudi Arabia.
C. Israel is not an island; it is located in the Middle East, bordering the Mediterranean Sea.
F. Saudi Arabia is not an island; it is located in the Middle East on the Arabian Peninsula.
The following countries are islands:
D. Bahrain is an island nation located in the Persian Gulf.
E. Oman has a coastline along the Arabian Sea and the Gulf of Oman, but it is not entirely an island.
A. Turkey is not an island; it is a transcontinental country, with a small part of its territory in Southeastern Europe and the majority in Western Asia. While it has a significant coastline, it is not an island.
Therefore the option is D