Pollution in the Mediterranean Sea is caused by

a. shipping lanes.

b. polluted Atlantic currents.

c. tourists, industrial dumping, and inadequate ocean currents.

d. pollution flow from the Danube and Rhine Rivers.

The answer would be : c. Tourist, Industrial Dumping, and inadequate ocean currents. Since the Mediterranean sea is really famous for its view, a lot of tourist facilities are located near the sea. But too bad a lot of them are irresponsible and dumping out their trash to the sea (there are a lot of garbage islands on Mediterranean Sea because of this)