One challenge of relying on solar energy in the Pacific Northwest is that sunlight isn’t _______: cloud cover varies unpredictably, posing difficulties for maintaining a steady power supply without battery storage.
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readingWhich choice completes the text with the most logical and precise word or phrase?
A
accidental
B
confident
C
expensive
D
consistent
Correct Answer: D
Choice D is the best answer. The text states that cloud cover "varies unpredictably." Therefore, the sunlight is not "consistent" (acting or done in the same way over time).
Choice A is incorrect because "accidental" means happening by chance. Choice B is incorrect because "confident" applies to people. Choice C is incorrect because the unpredictability refers to reliability, not cost ("expensive").