The correct answer is:
c. Metals can be hammered into thin sheets, and nonmetals are brittle.
This statement accurately describes the physical properties of metals and nonmetals. Metals are generally malleable (can be hammered into thin sheets), while nonmetals tend to be brittle in their solid form.
The other statements are incorrect:
a. Metals are generally good conductors of electricity, while many nonmetals are poor conductors (insulators). b. Most metals are solids under normal conditions, whereas many nonmetals are gases (like oxygen and nitrogen). d. Metals are primarily found on the left side and in the center of the Periodic Table, while nonmetals are found on the right side.