Why does the temperature remain constant during melting of ice even on heating?

The correct option is: Heat energy is used to overcome particle attraction

When ice (which is in the solid state) is heated, it begins to melt and convert into water (liquid state). During this phase transition, the temperature of the ice remains constant at 0 °C (273.15 K) until all of the ice has completely melted, even though heat is continuously being supplied.

In a solid like ice, the water molecules are held together in a rigid lattice structure by strong intermolecular forces of attraction. When heat energy is supplied to the ice at its melting point, this energy is not used to increase the kinetic energy of the molecules (which would otherwise raise the temperature). Instead, the thermal energy is entirely consumed to overcome the forces of attraction holding the water molecules in their fixed positions in the solid state.
This allows the molecules to break free from the rigid lattice and transition into a more fluid, liquid state (water).

This absorbed heat energy that is used to change the state of matter without raising its temperature is known as the latent heat of fusion. Since this energy is "hidden" in the structural change of the substance rather than contributing to the average kinetic energy of the particles, the temperature remains constant during the entire melting process.