Which peninsula forms the southernmost part of mainland Greece, connected by the Isthmus of Corinth?

• A Halkidiki
• B Attica
• C Peloponnese ✓
• D Mani

The Peloponnese is the large peninsula of southern Greece, connected to the mainland by the Isthmus of Corinth (now cut by the Corinth Canal), and divided into seven regional units including Laconia and Arcadia.