How does the author of a text develop central ideas?

A. by choosing a title that clearly states what the topic is

B. by building the text around evidence in the form of supporting details

C. by stating a central idea at the beginning of each paragraph

D. by organizing the text into sections and subsections with headings

B. by building the text around evidence in the form of supporting details

The author of a text develops central ideas primarily by building the text around evidence in the form of supporting details. This is option B. By providing strong evidence and supporting details throughout the text, the author establishes and develops the central ideas. This helps to convince the reader and provide a clear understanding of the main points being conveyed. While options A, C, and D may play a role in organizing and clarifying the overall structure of the text, they do not specifically address how the central ideas are developed.