Acoustical -> Mechanical -> Electrical Mechanical -> Acoustical -> Chemical Chemical -> Electrical -> Acoustical Electrical -> Acoustical -> Chemical
I am hesitating between 4 options to answer the following question, which option should I choose?
Question: Which of the following best shows the basic three-step energy transformation for a battery-operated radio?
Possibilities:
- Acoustical -> Mechanical -> Electrical
- Mechanical -> Acoustical -> Chemical
- Chemical -> Electrical -> Acoustical
- Electrical -> Acoustical -> Chemical

Chemical -> Electrical -> Acoustical