Concept:An electric pressing iron transforms electrical energy into heat energy for ironing clothes.
Explanation:The electric pressing iron contains a high-resistance heating element made of nichrome wire.
When an electric current flows through this wire, the resistance opposes the motion of the electrons.
This causes the electrons to collide with the atoms of the wire, making the atoms vibrate more rapidly.
The rapid vibration of the atoms generates a large amount of heat energy.
This heat is then transferred to the metal base plate of the iron.
According to the law of conservation of energy, energy cannot be created or destroyed; it can only be changed from one form to another.
Therefore, the electrical energy supplied to the iron is changed into heat energy.
Answer:The correct option is D:
electrical energy→heat energy.