Answer: Option (A) is the correct answer.
Step-by-step explanation:
It is known that in solids, molecules are held together by strong intermolecular forces of attraction. As a result, these molecules are unable to move from their initial position unless and until the molecules don't gain kinetic energy.
Hence, when molecules of a 10 kg block of ice gains kinetic energy then its molecules tend to move from their initial position. Hence, more number of collisions take place between them.
As a result, change in state occurs from solid to liquid.
Thus, we can conclude that for a 10 kg block of ice if you slowly increased the kinetic energy of the molecules within the ice then the ice would melt.