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Command of Evidence SAT question

Reading and Writing · Information and Ideas · Easy · Answer it here, explanation included.

2001751501251007550250Electricity (in thousands of MWh)Amount of Additional Electricity WindTurbines Could Generate WhenWinds Were Stronger Than ForecastWestMidwest
  • The data for the 2 categories are as follows: 
    • West: 150.2 thousand megawatt-hours
    • Midwest: 182.6 thousand megawatt-hours

Electric companies that use wind turbines rely on weather forecasts to predict the maximum amount of power, in megawatt-hours (MWh), they can generate using wind so that they can determine how much they’ll need to generate from other sources. When winds are stronger than they were forecast to be, however, the predicted maximum amount of electricity wind turbines could generate will be too low. For example, the graph shows that for the West region, the winds were blank

Which choice most effectively uses data from the graph to complete the example?

ExplanationShow

Choice A is the best answer. The claim is that when winds are stronger than forecasted, wind turbines can generate more energy than predicted. The supporting graph shows the additional amount (above the predicted amount) that the turbines generated under those conditions, with the West generating about 150 thousand additional MWh.

Choice B is incorrect. This choice doesn’t complete the example. The graph shows the additional amount of electricity that the wind turbines generated. The West bar is greater than 0, so the West generated more than the predicted amount. Choice C is incorrect. This choice doesn’t complete the example. The graph shows the additional amount of electricity that the wind turbines generated. The West bar is greater than 0, so the West generated more than the predicted amount. Choice D is incorrect. This choice misreads the graph. The graph shows us that the West (the bar on the left) generated about 150 thousand additional MWh.

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