Answer:
Option (2)
Step-by-step explanation:
The process by which one type of energy is transformed into another type is known as the conversion of energy . The changing of electrical energy to thermal energy is an example of energy conversion.
The room heaters are used to heat the room, maintaining a certain room temperature, and a toaster is used to make toasts. Both the room heater and the toaster are the two things from the given options that are used widely and it converts energy, from electrical to thermal energy.
Thus, the correct answer is option (2).