medium · SAT Reading & Writing
The development of 'smart glass'—a material that can change its light-transmission properties—has revolutionized sustainable architecture. [When a small electrical voltage is applied, the glass darkens, reducing the need for air conditioning by blocking solar heat.] This technology allows for larger windows without compromising a building's energy efficiency.
Which choice best describes the function of the second sentence as a whole?
- It compares the cost of smart glass to that of traditional high-efficiency windows.
- It explains the technical process through which the material achieves its benefit.
- It suggests that larger windows are detrimental to modern building design.
- It claims that smart glass will eventually replace all other forms of building insulation.
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