Digital PSAT Reading and Writing Practice Question 181: Answer and Explanation
Question: 181
If you've ever been in the Central or Eastern U.S. around dusk in late summer, you've probably witnessed a peculiar biological phenomenon-all around long, languorous insects begin to appear, with abdomens emitting a flickering, yellow-green glow. These insects, commonly known as "fireflies" or "lightning bugs", produce their glow in a process called bioluminescence. _________ the firefly is perhaps the most familiar species that emits its own light, bioluminescence has been discovered in varieties of fungi, fish, coral, squid, and even a bacterium that lives in elephant mucus.
Which choice completes the text with the most logical transition?
- A. When
- B. For
- C. Although
- D. Given
Correct Answer: C
Explanation:
(C) "Although" is the only option that provides a contrast between the familiar firefly and the more obscure species that also utilize bioluminescence.
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