Read the excerpt:
'The traditional view portrayed the deep ocean abyss as a barren, lifeless desert. Modern submersible expeditions, however, reveal teeming chemosynthetic communities thriving around hydrothermal vents without a single photon of sunlight.'
The author's primary rhetorical objective is to...

Answer and explanation

Correct answer: B. Correct an outdated scientific misconception by revealing biological complexity in the abyss

  1. Step 1: The passage contrasts the old 'barren desert' myth with discoveries of thriving chemosynthetic ecosystems. Step 2. The rhetorical purpose is overturning a legacy misconception with modern discoveries. Answer: Correct an outdated scientific misconception by revealing biological complexity in the abyss. Why not the others: Chemosynthesis thrives without sunlight, refuting the claim that sunlight remains an absolute prerequisite for all organic metabolic life.

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