Set 14: Transitions (Advanced)
Explanation
PASSAGE
Renewable energy sources like solar and wind are becoming increasingly cost-competitive with fossil fuels. Installation costs have dropped dramatically over the past decade. _______ energy storage technology lags behind, creating challenges for grid reliability when the sun isn't shining or wind isn't blowing.
Which choice completes the text with the most logical transition?
Detailed Answer Explanation
This question asks you to choose the transition that best connects two ideas. Progress in costs (positive) vs. storage limitations (challenge). 'That being said' introduces this complicating factor. Transitions signal the relationship between sentences or paragraphs. Determine the logical relationship (addition, contrast, cause-effect, example) and select the transition that accurately expresses it. The right transition makes the relationship between ideas crystal clear. Consider what logical connection exists: Is the second idea adding to the first? Contrasting it? Showing a result? The transition should accurately reflect this relationship.
Key Evidence:
• "becoming increasingly cost-competitive"
• "storage technology lags behind"
Why others are wrong: A (Comparison - storage problems contrast with, not resemble, cost progress.), C (Cause/effect - storage lag isn't caused by cost drops.), B (Emphasis - the storage issue complicates, not confirms, the progress.).
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