Melt : Liquid :: Freeze : Solid

Explanation:

When we talk about the relationship between "melt" and "liquid," we are referring to the process of a substance changing from a solid state to a liquid state. Similarly, when we think about the relationship between "freeze" and "solid," we are referring to the process of a substance changing from a liquid state to a solid state.

Process of Melting:
1. Change in State: Melting occurs when a solid substance is heated, and its particles gain enough energy to break free from their fixed positions.
2. Transition to Liquid: As the particles gain energy, they start to move more freely, resulting in a transition from a solid state to a liquid state.
3. End Result: The substance is now in a liquid state, where its particles can move more freely and take the shape of their container.

Process of Freezing:
1. Change in State: Freezing occurs when a liquid substance is cooled, and its particles lose energy, causing them to slow down and come closer together.
2. Transition to Solid: As the particles lose energy, they lose their ability to move freely and arrange themselves in a more organized and fixed pattern, resulting in a transition from a liquid state to a solid state.
3. End Result: The substance is now in a solid state, where its particles are tightly packed and maintain a fixed shape and volume.

Comparison:
- In both melting and freezing, there is a change in the state of a substance.
- Melting involves the transition from a solid state to a liquid state, while freezing involves the transition from a liquid state to a solid state.
- The end result of melting is a liquid substance, while the end result of freezing is a solid substance.

Therefore, the correct answer is option B) Solid, as it represents the relationship between "freeze" and "solid" in a similar way as "melt" and "liquid."