The answer to your question is number 2. good luck ;)
The correct answer is D. Exposition
Rising action includes already known characters who are doing something, climax and denouement come at the end. Exposition is what you ask.
Answer :A power supply takes the AC from the wall outlet, converts it to unregulated DC, and reduces the voltage using an input power transformer, typically stepping it down to the voltage required by the load. For safety reasons, the transformer also separates the output power supply from the mains input.
Electricity is most often generated at a power plant by electromechanical generators, primarily driven by heat engines fueled by combustion or nuclear fission but also by other means such as the kinetic energy of flowing water and wind. Other energy sources include solar photovoltaics and geothermal power.
Explanation:
