Final answer:
The essay requires a revision for an in-text citation in the sentence that directly reflects Rosetta Dunigan's ideas on ambition and its potential to lead to sorrow. Proper citation is essential to adhere to academic standards and avoid plagiarism. The writer should revise the sentence 'The happiness promised by wealth often dissolves in sorrow just as we are about to grasp it' to include an in-text citation. The correct answer is option 3.
Step-by-step explanation:
The sentence in the essay that should be revised to include an in-text citation is: 'The happiness promised by wealth often dissolves in sorrow just as we are about to grasp it.' This sentence directly mirrors the idea presented in Rosetta Dunigan's text about ambition and mirrors the phrasing closely enough that it would require proper citation to avoid plagiarism. The writer can either paraphrase this idea more distinctly or include a direct quotation with the appropriate citation according to the style guide they are following.
Integrating sources and quotations appropriately is crucial to ensure the integrity and credibility of an essay. Proper citation attributes the original ideas to their creators and helps avoid academic dishonesty. This is in line with the "Editing Focus" described, which emphasizes the importance of when and how to use quotations and the need for clear attribution of cited passages.