The answer is A. An electrolytic cell is by definition a non-spontaneous chemical reaction that uses something like a battery to power it. The spontaneous counterpart is the voltaic cell.
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An electrolytic cell uses electric current to induce a non-spontaneous chemical reaction, a process that is opposite to a galvanic cell. The correct option is A: An electric current causes an otherwise non-spontaneous chemical reaction to occur. In an electrolytic cell, oxidation occurs at the anode and reduction occurs at the cathode, with electron flow driving the reaction.
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