The correct answer is - d. Strait of Hormuz.
The Strait of Hormuz is located between the territories of Oman and the United Arab Emirates from one side, and Iran on the other side. It lies between the water bodies of the Persian Gulf and Gulf of Oman.
The strait itself is on the boundary between the Eurasian tectonic plate, and the Arabian tectonic plate. They form a convergent boundary. Since the Arabian plate is pushing against the Eurasian plate, there's constant stress deep into the ground, stress that causes lot of cracks to appear inside the crust. That results in very common earthquake occurrences.
