This example demonstrates how D3.js can set paragraph styles conditionally based on data values. It selects the body element and appends a paragraph for each number in the dataset [5, 10, 15, 20, 25], with text displaying the count. Using the `.style()` method, paragraphs with data values greater than 10 are colored red, while others remain black, illustrating data-driven styling with D3’s selection and data-binding APIs.