Greece consists almost entirely of __________.

• A. sandstone
• B. marble
• C. limestone
• D. granite

Answer: (C)

Greece’s bedrock is largely carbonate rock formed from ancient marine sediments, with thick limestone sequences spread across much of the mainland and many islands. Limestone is the most widespread rock type in Greek geology, so it’s the best-fitting choice. Marble, while famous in Greece, is a metamorphosed form of limestone and appears in specific quarry areas rather than dominating the landscape. Sandstone and granite exist in parts, but they’re not as representative of Greece’s overall geology as limestone.