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Para-jumbles
a. Consequently, extensive experimental efforts, including deep underground detectors and particle colliders, are underway to directly detect these elusive particles and unravel their fundamental nature. b. Scientists infer its presence indirectly, accounting for a significant portion of the universe's mass that cannot be attributed to ordinary baryonic matter. c. The existence of dark matter is one of the most perplexing mysteries in modern astrophysics. d. While it does not emit, absorb, or reflect light, its gravitational influence is clearly observable in the rotation curves of galaxies and the dynamics of galaxy clusters. These sentences, when properly sequenced, form a coherent paragraph. Which of the options best outline their correct order? 1. c, b, d, a 2. d, c, b, a 3. c, d, b, a 4. b, c, d, a
Correct Answer: 3 (c, d, b, a) To solve "Sentence Rearrangement" or "Para-jumble" tasks, look for the logical flow of ideas: Step 1 (Introduction): Sentence (c) serves as the perfect opening by introducing the central topic – the existence of dark matter – and establishing it as a "perplexing mystery." Step 2 (Elaboration): Sentence (d) logically follows (c) by immediately elaborating on *why* it's a mystery: it's invisible but its gravitational effects are clearly observable. The contrast "While it does not emit..." and "its gravitational influence is clearly observable" directly addresses the puzzling nature introduced in (c). Step 3 (Secondary Factor): Sentence (b) explains *how* scientists deal with this invisible yet influential entity. It describes the method of inference and its quantitative significance ("accounting for a significant portion of the universe's mass"), which builds upon the observable influence mentioned in (d). Step 4 (Conclusion/Result): Sentence (a) acts as a concluding sentence, starting with "Consequently," which signals a result or response to the ongoing mystery and indirect evidence. It describes the current scientific efforts to solve the problem of direct detection, logically following the explanation of its inferred presence.
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