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Para-jumbles
a. Its presence is inferred solely through its gravitational effects on visible matter, such as the rotation curves of galaxies and the gravitational lensing of distant objects. b. Consequently, extensive experimental efforts are underway, ranging from underground detectors searching for WIMP interactions to satellite missions mapping its distribution, in the hope of unraveling this cosmic enigma. c. Despite compelling observational evidence, the fundamental composition of dark matter remains unknown, posing a significant challenge to the Standard Model of particle physics. d. One of the most profound mysteries in contemporary astrophysics is the existence of dark matter, an enigmatic substance that does not interact with light or other forms of electromagnetic radiation. These sentences, when properly sequenced, form a coherent paragraph. Which of the options best outline their correct order? 1. d, a, c, b 2. d, c, a, b 3. a, d, c, b 4. c, a, d, b
Correct Answer: 1 (d, a, c, b) To solve "Sentence Rearrangement" or "Para-jumble" tasks, look for the logical flow of ideas: Step 1 (Introduction): Sentence (d) is the most suitable opening. It introduces the main topic, "dark matter," defines it, and establishes its mysterious nature, setting the stage for the rest of the paragraph. Step 2 (Elaboration): Sentence (a) logically follows (d). It explains HOW the presence of this enigmatic substance, dark matter, is inferred, providing specific examples like gravitational effects, galaxy rotation curves, and lensing. Step 3 (Secondary Factor): Sentence (c) builds on the previous two by highlighting the persistent challenge. It acknowledges the "compelling observational evidence" mentioned implicitly in (a) but pivots to the unsolved problem of its "fundamental composition" and its implications for particle physics. Step 4 (Conclusion/Result): Sentence (b) provides a resolution or consequence. Starting with "Consequently," it describes the actions being taken (experimental efforts) to address the challenge outlined in (c), aiming to solve the "cosmic enigma."
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