Accepted Answer
I think the correct answer from the choices listed above is option 1. The energy conversion that must occur in an electrolytic cell is the conversion from electrical energy to chemical energy. The reaction must be forced by applying an external electric current thus needing a supply of electric current.
Suggested Answer
Answer: 1) electrical energy to chemical energyExplanation: The reaction must be forced by applying an external electric current thus needing a supply of electric current.