Digital PSAT Reading and Writing Practice Question 97: Answer and Explanation
Question: 97
Luminescence is fundamentally distinct from the way we create light in incandescent light bulbs. Incandescence uses the super-heating of a filament to generate light by thermal radiation, and a lot of energy is wasted in the process. ____________ less than 20% of luminescent light is created by thermal radiation, which has earned it the nickname "cold light".
Which choice completes the text with the most logical transition?
- A. Additionally,
- B. Moreover,
- C. Consequently,
- D. In contrast,
Correct Answer: D
Explanation:
(D) Choice (D) is the only option that demonstrates a contrast between the relatively wasteful process of incandescence and the far more efficient process of luminescence.
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