Answer:
Pyrenees and Alps
Step-by-step explanation:
the Tian Shan (signs already very Asian, right ?) are in Central Asia. the Apennines are a mountain range inside of Italy (connecting to the Alps in the northwest corner).
the Urals are actual the delimiter between Europe and Asia.
I think you meant "middle Rhine Highlands". and these mountains are in Germany and have nothing to do with a delimiter of western Europe to southern Europe.
the Capathians are going through the middle of Eastern Europe.
but the Pyrenees particularly are between France and Spain, and the Alps are a delimiter between Italy and the rest of Europe.