The correct answer is "It is stated directly in the first paragraph."
The central idea of the article about the lack of leadership by women and racial minorities in journalism is clearly articulated right from the beginning, specifically in the first paragraph. This sets the tone for the rest of the article, which provides statistics and further details that support this main point.
The other options are not as accurate because the text does not leave the interpretation completely to the reader, nor is the main idea only stated in the final paragraph. The first three paragraphs provide context and support but do not summarize the main idea as directly as the first paragraph does.