Strait of Hormuz lies between

Black Sea and Marmara Sea
Persian Gulf and Gulf of Oman
Arabian Sea and Red Sea
Red Sea and Mediterranean Sea

The correct answer is (b). The Strait of Hormuz is a narrow, international strait in the Persian Gulf that connects the Gulf of Oman in the east with the Persian Gulf and the Gulf of Bahrain in the west. It is one of the world’s most important shipping lanes, carrying about 20% of the world’s oil.

The other options are incorrect. The Black Sea and Marmara Sea are connected by the Bosporus Strait. The Arabian Sea and Red Sea are connected by the Strait of Bab el-Mandeb. The Red Sea and Mediterranean Sea are connected by the Suez Canal.