Which action occurs as a substance undergoes a phase change from a liquid to a gas?

a
The temperature of the particles decrease because heat is being added.
b
The temperature of the particles increase because heat is being added.
c
The substance changes into a completely different substance. The particles of the original substance are destroyed and new particles form.
d
The intermolecular attractive forces are broken by the addition of heat.

d

The intermolecular attractive forces are broken by the addition of heat.