On a sunny afternoon, a coastal town may be cooler than a town farther inland, partly because of a sea breeze. This breeze develops when land warms more quickly than the nearby ocean. The air above the warm land heats up and rises. Cooler air over the water then moves toward the shore to take its place. As this cooler air reaches the coast, it can lower the temperature there, even while inland areas remain hot. Which choice best describes the text’s overall structure?
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Answer: B (It presents a temperature difference between coastal and inland locations, then explains how a sea breeze contributes to that difference.)
The text introduces a temperature difference between coastal and inland locations, then explains the airflow that helps produce it. It does not compare sunny and cloudy afternoons in one town. It presents one explanation involving a sea breeze, without comparing competing explanations. It explains a weather pattern and does not recommend changes that towns should make.