Question

Difficulty: MediumEstablishing Introductions and Thesis Statements

The following is a draft of an essay about a pioneering paleontologist.

[1]
Born in 1799 in a seaside town in Dorset, England, she was not trained as a scientist. Yet, she spent her days searching the cliffs of Lyme Regis for what she called "curiosities." Her discoveries of prehistoric marine reptiles, including the first ichthyosaur and plesiosaur skeletons ever correctly identified, challenged the scientific community's understanding of the history of the Earth.

[2]
At the time, geology was a field dominated by wealthy gentlemen who often purchased Anning's finds to display in museums. Although she possessed an extraordinary ability to locate and reconstruct fossils, her gender and lower social status prevented her from fully participating in the scientific societies of nineteenth-century Britain. Despite these barriers, her work laid the groundwork for major developments in paleontology and evolutionary theory.

Which of the following sentences, if placed at the beginning of the passage, would best introduce the main topic of the essay?

  1. Mary Anning, a nineteenth-century fossil hunter from a working-class background, made groundbreaking discoveries that revolutionized early paleontology.Answer
  2. B
    Although Mary Anning was a pioneering fossil hunter whose discoveries in the nineteenth century challenged the scientific community's understanding of Earth's history.
  3. C
    Mary Anning discovered the first correctly identified ichthyosaur skeleton, her research changed the way scientists viewed the prehistoric world.
  4. D
    Because she was born into a working-class family; Mary Anning was initially excluded from the official scientific community of nineteenth-century Britain.

Answer

Mary Anning, a nineteenth-century fossil hunter from a working-class background, made groundbreaking discoveries that revolutionized early paleontology.
The correct option is grammatically complete and successfully introduces both the historical significance of Mary Anning's paleontological discoveries (discussed in the first paragraph) and the limitations imposed on her due to her working-class background and gender (discussed in the second paragraph).

Step-by-Step Solution

1
Analyze the passage to identify the main themes and subject.
The passage centers on Mary Anning, an untrained fossil finder, her significant paleontological discoveries, and the social/class obstacles she faced in nineteenth-century England.
An effective introduction must establish both the scientific achievements and the social context discussed in the text.
2
Evaluate the grammar of each option to eliminate structural errors.
Identify that the choice beginning with 'Although' is a fragment, the choice using a comma between two independent clauses is a comma splice, and the choice with a semicolon after 'family' incorrectly separates a dependent clause.
ACT English questions require the correct option to be grammatically correct.
3
Confirm the remaining grammatically correct option matches the rhetorical goal.
The option describing Mary Anning as a working-class fossil hunter who revolutionized early paleontology is grammatically sound and introduces both the scientific and biographical elements of the essay.
This establishes the best thesis statement and introduction for the entire passage.

Key Concept

Establishing Introductions and Thesis Statements
Estimated Time:1m 0s
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