Here's why:
* Thesis: The thesis statement is the central idea of your piece. Each paragraph should directly support and develop this central idea. If a paragraph doesn't relate back to the thesis, it needs to be revised or removed.
Let's look at why the other options are less important in this specific revision:
* Tone: While tone is important for overall consistency and impact, it doesn't directly impact whether a paragraph is relevant to the central idea.
* Grammar: Grammar is essential for clarity, but it doesn't determine if a paragraph is on topic.
* Diction: Diction (word choice) is crucial for style and clarity, but it doesn't inherently dictate whether a paragraph contributes to the main idea.
Example:
Imagine your thesis is "Social media can be both a tool for connection and a source of anxiety." If one of your paragraphs focuses on the history of social media, it wouldn't directly support the thesis and would need revision.