Answer: Option (A) is the correct answer.
Explanation:
A change in chemical reaction which results in the formation of new compounds is known as a chemical change whereas a chemical reaction in which there is no formation of any new compounds is known as a physical change.
For example, rusting of iron is a chemical change and melting of ice is a physical change.
Therefore, out of the given options iron melting is a physical change because melting causes change in intermolecular forces and no formation of any new products.
Thus, iron melting is a physical change.
