A psychology study assessed creativity (test scores 0-100) under four lighting conditions: dim warm light, 78; bright warm light, 65; dim cool light, 60; bright cool light, 52. The researchers concluded that warm-toned light boosts creativity more than cool-toned light. The data most directly supporting this color-temperature claim is ______
Which choice most logically completes the text using the data above?
- A
the average score across all conditions.
- Bcheck_circle
the comparison of dim warm (78) vs. dim cool (60) and bright warm (65) vs. bright cool (52)—warm wins in both intensity comparisons.
- C
the 78 score for dim warm light alone.
- D
the 52 score for bright cool light alone.
Explanation
To isolate light color (warm vs. cool), one should hold intensity constant. Choice A does this twice (dim and bright pairs), with warm winning each time, providing the strongest support for the color-based claim.