Question

most elements are metals. what is a physical property of metals? they are man-made. they conduct heat. they float in water.

Explanation:

• "They are man - made" is incorrect as many metals are naturally occurring (e.g., gold, iron in the earth's crust).
• "They conduct heat" is a well - known physical property of metals. Metals have free electrons that allow them to transfer heat energy efficiently.
• "They float in water" is incorrect. Most metals have a density greater than that of water, so they sink (e.g., iron, copper).

Answer:

B. They conduct heat.