The table displays the densities of four substances.

Substance:
Air
Water
Steel
Copper

Density (grams/centimeter3):
0.0012
1.00
5,000
6,420

From this information, in which substance is it likely that the speed of sound waves is the highest?

A. Air
B. water
C. steel
D. copper

The speed of sound waves is typically highest in substances with lower density. Therefore, it is likely that the speed of sound waves is highest in substance A. Air.