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Para-jumbles 4 / 100

a. Consequently, understanding its true nature is crucial for a complete picture of cosmic structure formation and the ultimate fate of the universe.
b. Its presence is primarily inferred from its gravitational effects on visible matter, such as the anomalous rotation curves of galaxies and the gravitational lensing of distant objects.
c. The existence of dark matter, a mysterious substance that does not interact with light or other electromagnetic radiation, is one of the most perplexing puzzles in modern cosmology.
d. Despite decades of research, direct detection experiments on Earth and observations from space have yet to unambiguously identify the specific particles that constitute this elusive component of the universe.

These sentences, when properly sequenced, form a coherent paragraph. Which of the options best outline their correct order?

1. c, d, b, a

2. c, b, d, a

3. b, c, d, a

4. c, b, a, d

Correct Answer: 2 (c, b, d, a)
To solve "Sentence Rearrangement" or "Para-jumble" tasks, look for the logical flow of ideas:
Step 1 (Introduction): Sentence (c) serves as the best introduction. It introduces the central topic "dark matter" and establishes it as a "perplexing puzzle" in cosmology, setting the stage for the rest of the paragraph.
Step 2 (Elaboration): Sentence (b) naturally follows (c). After introducing dark matter, (b) explains HOW its existence is known, by detailing its "gravitational effects on visible matter." The phrase "Its presence" clearly refers back to the dark matter introduced in (c).
Step 3 (Secondary Factor): Sentence (d) elaborates on the efforts to understand dark matter, following the explanation of its inferred presence. It introduces the challenge of "direct detection experiments" and the current status of research ("yet to unambiguously identify the specific particles"). This logically follows the evidence of its existence.
Step 4 (Conclusion/Result): Sentence (a) acts as a concluding statement, beginning with the transition word "Consequently." It states the significance and importance of understanding dark matter, tying together the introduction of the puzzle, the evidence for it, and the ongoing challenges in research.

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