Final answer:
The main source of logic in text is found through specific reasoning strategies such as cause and effect. Implicit and explicit logic support the main idea by providing a pathway of reasoning that connects events or actions to their outcomes. The topic sentence should align with this strategy, serve to substantiate the thesis, and guide the paragraph's direction.
Step-by-step explanation:
The main source of logic in a text can typically be identified through the types of reasoning strategies employed, such as analogy, cause and effect, classification and division, comparison and contrast, problem and solution, or definition, as mentioned in the chapter overview. Cause and effect reasoning details how one event leads to another. This type of logic, whether implicit or explicit, supports the main idea by providing a clear line of reasoning that readers can follow to understand the consequences or outcomes of certain conditions or actions. A topic sentence in a paragraph should align with the selected reasoning strategy and aid in reinforcing the thesis statement.
Developing ideas within paragraphs are crucial; they fulfill several purposes such as providing background information, showing connections between ideas, supporting or refuting claims, and indicating what is to come in the argument. Evidence provided within the body paragraphs must be adequate to both support the thesis and progress toward the conclusion, often including a combination of quotes, paraphrases, context, personal insights, and counterarguments. Logic and reasoning, therefore, form the foundation of effective argumentative writing, ensuring that claims are reasonable and trustworthy for the reader.