The increase in volume of a material when heated is

All substances expand when heated, that is, the volume of a substance will increase when it is heated. This happens because of the motion of molecules making up the material. When the material is heated, by supplying heat to it, the kinetic energy of the constituent molecules increase.

Explanation:

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Thermal Expansion

- "bill clinton ( the 42nd u.s. president, served in office from by low unemployment, declining crime rates and a budget surplus. during clinton's second term, the u.s. economy was healthy, unemployment was low and the nation experienced a major technology boom and the rise of the internet."

the answer would be:

b. race