What is the primary purpose of supporting ideas in a text?

The primary purpose of supporting ideas in a text is to clarify and explain the main idea. Supporting ideas provide evidence, examples, and details that enhance the reader's understanding of the central concept being discussed. By elaborating on the main idea, these supporting details help readers grasp the nuances of the argument or narrative, ensuring that the overall message is communicated effectively.

In contrast, introducing new characters pertains to narrative development, which is not the main objective of supporting ideas in a text. Summarizing the topic would generally involve condensing information rather than providing in-depth clarification, which is distinct from the role of supporting details. Suggesting alternate viewpoints does not align with the primary purpose of supporting ideas, as it typically involves presenting different perspectives rather than reinforcing the main idea.