Ports of the Baltic Sea remain open for trade even during winter because

Options

A. It lies in the tropical belt
B. North Atlantic Drift, a warm ocean current flows in the region.
C. Local winds keep it warm
D. Western disturbances cause abrupt rise in the temperature.

Answer

B

Explanation

It is due to the North Atlantic Drift which is a warm water ocean current, an extension of the Gulf Stream. This current kccp the ports along the coasts warm enough to stay open year around