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Zorluk: OrtaSelecting Concluding Sentences and Transitions

In 1856, eighteen-year-old chemistry student William Henry Perkin was attempting to synthesize quinine, a treatment for malaria, in his home laboratory. Instead of obtaining the clear drug, his experiments yielded a dark, sticky sludge. Rather than discarding the failed mixture, Perkin investigated its properties and discovered that when diluted with alcohol, it produced a vibrant, long-lasting purple color. Historically, purple dye was harvested from the mucus of thousands of marine snails, rendering it so expensive that only royalty could afford it. Recognizing the commercial potential of his accidental creation, Perkin patented the substance as mauveine, the world's first synthetic dye, and opened a factory to mass-produce it.

The writer wants to add a concluding sentence to the paragraph that reinforces the significance of Perkin's transition from an accidental discovery to a commercial success. Which choice best accomplishes this goal?

  1. A
    Quinine, meanwhile, continued to be harvested from the bark of the cinchona tree in South America for many years.
  2. By making a once-exclusive color widely accessible, Perkin not only revolutionized the textile industry but also launched the modern chemical manufacturing sector.Cevap
  3. C
    Perkin became extremely wealthy from his invention, he retired at the age of thirty-six to focus entirely on private research.
  4. D
    Nevertheless, purple clothing remained a rare novelty that consumers generally ignored in favor of traditional organic dyes.

Cevap

By making a once-exclusive color widely accessible, Perkin not only revolutionized the textile industry but also launched the modern chemical manufacturing sector.
The correct answer effectively concludes the paragraph by highlighting the transition of purple dye from an exclusive luxury to an accessible commodity, which reinforces the paragraph's discussion of Perkin's commercialization of mauveine and its industry-wide impact.

Adım Adım Çözüm

1
Analyze the paragraph's main theme and flow.
The paragraph describes Perkin's accidental creation of a synthetic purple dye, its historical context as a rare and expensive luxury, and his effort to commercialize and mass-produce it.
Understanding the paragraph's primary focus is essential to selecting a concluding sentence that summarizes or extends the main ideas without introducing off-topic points.
2
Evaluate the choices for relevance and correct transition of ideas.
The option focusing on making the color accessible and launching the chemical industry directly resolves the narrative arc. Other options either introduce irrelevant details about quinine, contain grammatical errors, or contradict the success of the factory.
Eliminating options with irrelevant content or incorrect logical transitions ensures the conclusion is both supportive and cohesive.
3
Check the remaining option for grammatical correctness.
The correct option is grammatically sound, avoiding the comma splice present in the option describing Perkin's retirement.
ACT English questions require that the correct choice not only fit rhetorically but also adhere strictly to standard English grammar conventions.

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Selecting Concluding Sentences and Transitions
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