Why is there no change in the temperature when the process of melting takes place?

a).because the supplied heat is used to overcome the force of attraction between the molecules.
b).because the supplied heat is used to increase the movement between the molecules.
c).because the supplied heat is used to increase the kinetic energy of the molecules.
d).because the supplied heat is used to overcome the force of repulsion between the molecules.
e).because the supplied heat is used to decrease the kinetic energy of the molecules.