The correct answer is option 4, Gulf Stream. The Gulf Stream is a warm ocean current that flows from the Gulf of Mexico along the East Coast of the United States and then continues across the North Atlantic towards Europe. It is one of the most powerful and well-known ocean currents in the world. The Gulf Stream carries warm water from the tropics towards higher latitudes, which has a significant impact on the climate of the regions it passes through. As a warm current, it helps to moderate the temperatures of the surrounding areas, including countries like the United Kingdom, Ireland, and Norway. This warmth also contributes to the Gulf Stream`s influence on weather patterns and marine ecosystems along its path.