Answer: Option (b) is the correct answer.
Step-by-step explanation:
It is known that in solids, particles are placed closer to each other due to strong forces of attraction between them. Due to this solids occupy a fixed shape an volume.
On the other hand, molecules of a liquid are held by less strong forces as compared to solids. Therefore, molecules of a liquid are able to slide past each other.
Hence, when in liquid phase particles bond together it it changes into solid phase.
Thus, we can conclude that the phase change that occurs when the attraction between liquid particles becomes a significant factor and the particles bond together is freezing.