Consider the following sentences:
[A] Consequently, solar irradiance data recorded over decades reveals subtle cyclical variations.
[B] Solar physicists investigate the interior dynamics of the Sun through helioseismology.
[C] This technique analyzes acoustic wave oscillations traversing the solar plasma.
[D] These sound waves provide an unprecedented window into the Sun's magnetic dynamo.
Which sequence represents the most logical flow of ideas?
Answer and explanation
Correct answer: C. B -> C -> D -> A
- Step 1: Identify the independent introductory sentence. Sentence [B] introduces the broad scientific field and principal methodology ("helioseismology").
- Step 2: Trace anaphoric reference links: Sentence [C] refers back to "This technique" by explaining that it analyzes acoustic waves. Sentence [D] picks up "These sound waves" and connects them to the magnetic dynamo. Finally, Sentence [A] concludes with the resulting long-term irradiance findings ("Consequently..."). This establishes the sequence: B -> C -> D -> A.
Answer
B -> C -> D -> A.
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