Considering all costs, the cheapest source of energy for domestic use is? by Sunday | Jun 6 | Agricultural Science WAEC | 0 comments A. electricity B. sunlight C. biogas D. water Correct Answer: Option B B. sunlight Users Also Read These:The cheapest source of funds available to a company…The channel through which all government borrowing…Which of the following is the cheapest for the…A lamp marked 100W, 250V is lit for 10 hours. If it…A household refrigerator consumes electrical energy…