Most of southern europe's terrain is
a. desert
b. farmland
c. lowland
d. mountainous

Most of the Southern Europe's terrain is moutaineous.

D. mountainous

Explanation:

Most of this area is a mountainous landscape as the terrain here is well dominated by the high riding mountains and the and the Pyrenees and the Carpathians are some of the rugged mountain systems found in this area. And the northern side is plane area and less hilly in nature as it more of the flat land surface. Like that of the great Britain planes in the west to the Ural mountains in the east. Hence,  has a low and median aged population. that lives n the eastern European plains and the lowlands of British and the Swedish lowlands.

Answeroil-shale;