The correct statement about metals and nonmetals is:
Metals can be hammered into thin sheets, and nonmetals are brittle.
This reflects the malleability of metals and the brittleness of many nonmetals. The other statements are not accurate. For example, not all columns of the periodic table contain both metals and nonmetals, most metals are solids (but not all nonmetals are liquids), and metals are generally good conductors of electricity while nonmetals are typically poor conductors.