Which of the following reinforces the main idea of a text?

Supporting ideas play a crucial role in reinforcing the main idea of a text. They are the statements or concepts that provide additional information, evidence, or arguments that bolster the primary argument or thesis presented in the text. By elaborating on the main idea through various angles, supporting ideas help to create a multifaceted understanding for the reader, making the central concept more persuasive and clearer.

While clarifying statements can help in understanding the main idea, they are not primarily focused on reinforcing it; rather, they aim to make it clearer. Examples also serve to illustrate the main idea, but they do not serve as the backbone in the same way that supporting ideas do; they demonstrate or highlight the main idea rather than substantiate it deeply. The details section, though it provides context, elaborates on supporting ideas, but it is the supporting ideas that are specifically designed to enhance the main idea directly. Thus, it is the supporting ideas that effectively cement the main idea in the reader's mind.