Anonspontaneous reaction occurs in
an electrolytic cell
either an electrolytic or voltaic cell
a voltaic cell

A voltaic cell u are going to get it keep on trying

Answer;

an electrolytic cell

Explanation;A non-spontaneous reaction occurs in an electrolytic cell.An electrochemical cell is a device that uses redox reactions to either produce electricity or use electricity.  An electrolytic cell is a type of electrochemical cell that uses energy to drive non-spontaneous redox reactions. Voltaic cell on the other hand is a type of electrochemical cell that produces electricity and releases energy as the result of spontaneous redox reactions.