Concept:Galvanic or voltaic cells produce electrical energy from spontaneous chemical reactions.Explanation:I. Lead-acid battery produces electrical energy from spontaneous redox reactions.II. Dry cell also produces electrical energy from spontaneous chemical reactions.III. Daniell cell is a galvanic cell that produces electrical energy.IV. Electrolytic cell consumes electrical energy to cause non-spontaneous reactions.So only I, II, and III are electrical energy producers.Answer:B. I, II, and III only