Tyler takes butter out of the refrigerator and keeps it on the table for sometime. He finds that the state of butter changes from solid to liquid.
The reversible process by which the state of butter can again be changed to solid is
Freezing
Freezing is the process in which a liquid turns into its solid state as a result of a decrease in temperature. Hence, the state of butter can again be changed to solid by freezing it.
The correct answer is B.