Final answer:
Option 1 is correct as it aligns with the notion that supporting evidence is key to developing the central idea of an article, typically introduced in the topic sentence and expanded upon with various forms of evidence to reinforce the main point.
Step-by-step explanation:
The answer choice that BEST explains how these details develop the central idea of an article is Option 1: By providing supporting evidence for the main argument. This selection is most appropriate because it acknowledges that the central idea of a paragraph or an article is typically introduced through a topic sentence and is then developed by including various forms of supporting evidence. Such evidence may consist of details, examples, quotations, paraphrases, and summaries from sources. It is essential to synthesize this evidence in order to demonstrate the relationships between different pieces of information and reinforce the main point of the paragraph or article.