Choose the option that best answers the question.
Deep beneath the ocean's surface, where sunlight cannot penetrate, many marine organisms have evolved the ability to produce their own light. This biological phenomenon, known as bioluminescence, serves several critical functions. Some creatures use flashes of light to scare off predators, while others employ glowing lures to attract prey. For instance, the anglerfish utilizes a luminous bulb suspended above its mouth to draw in curious organisms, which are then quickly captured. In this dark and high-pressure environment, bioluminescence is [not just a cool party trick] but an essential tool for survival.
Which choice best maintains the established tone of the passage?
- ANO CHANGE
- Bnot an ephemeral phantasm of optical amusement
- not merely a decorative featureCevap
- Dnot a characteristic that is completely useless and performs no helpful function
Cevap
not merely a decorative feature
The correct answer 'not merely a decorative feature' is appropriate because it uses a formal, objective, and neutral tone that perfectly matches the rest of the scientific passage, while stating the point concisely.
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Stylistic Appropriateness