• A The Alps, the Apennines, the Po Valley, the Tyrrhenian Sea, and the Adriatic Sea
  • B The Alps, the Apennines, the Po Valley, the Ionian Sea, and the Mediterranean Sea
  • C The Alps, the Apennines, the Po Valley, the Tyrrhenian Sea, and the Ionian Sea
  • D The Alps, the Apennines, the Po Valley, the Adriatic Sea, and the Tyrrhenian Sea