Between 1880 and 1900,a great debate raged between Edison and Westinghouse over the use of direct current (DC)or ____ current (AC)electricity.

Question

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The sentence states that the debate was between Edison and Westinghouse over the use of direct current (DC) or "____ current" electricity. The word "or" indicates that the missing word is likely an opposite or alternative to DC. The only logical option from the given choices is "alternating" (AC), which became the preferred form of electrical transmission due to its ability to be transformed into various voltages and to travel longer distances with less energy loss.

Between 1880 and 1900,a Great Debate Raged Between Edison and Westinghouse