This example renders a static line chart of daily values using React and D3.js v7. It shows a line path, x- and y-axes, and axis labels, with data from a hardcoded array of five day-value pairs. The visualization is drawn as an SVG using D3’s scaleLinear, extent, line generator, and axisBottom/axisLeft methods. The React component uses a useRef and useEffect to integrate D3 selection and rendering into the DOM.