Question 7cd6c0

1.2 Command of Evidence - Quantitative evidence: reading tables and graphs
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9080706050403020100Percent of newly installedturbines20112012201320142015201620172018201920202021Rotor Diameters of Newly Installed Wind Turbines in the United States, 20112021Year >130 meters <100 meters 100115 meters 115130 meters

All other things being equal, the larger a wind turbines rotor diameter (the diameter of the imaginary circle swept by the turbines rotating blades), the greater amount of energy the turbine can generate. In a research paper on wind power, a student claims that in the United States, the amount of energy generated per newly installed turbine increased substantially between 2011 and 2021.

Which choice best describes data in the graph that support the student’s claim? 

A.

The percentage of newly installed turbines with rotor diameters greater than 130 meters increased every year between 2011 and 2021. 

B.

In 2011, nearly 80% of turbines installed had rotor diameters of less than 100 meters, whereas only a little more than 20% of turbines installed that year had rotor diameters of 100–115 meters. 

C.

No turbines installed in 2011 had rotor diameters greater than 115 meters, whereas the majority of turbines installed in 2021 had rotor diameters greater than 130 meters.

D.

Most turbines installed in 2011 had rotor diameters of less than 100 meters, whereas most turbines installed in 2021 had rotor diameters of at least 115 meters.