Answer:
B. It increases.
Explanation:
The kinetic energy is associated with the motion of the particles of a substance.
When the temperature increases, the movement will increase, which means that the velocity of the particles will increase.
According to the mathematical defenition of kinetic energy
\(Ek = \frac{1}{2} mv^{2}\)
The higher the velocity, the higher the kinetic energy.
If the matter is made by a monoatomic gas, the relation between the kinetic energy and temperature is even more evident:
\(Ec = \frac{3}{2}\frac{R}{Na} T\)
R: gas constant
Na: Avogadro's number
T: temperature
