This animated scatter plot visualizes the Iris Dataset, cycling through the four measured attributes on the x-axis every three seconds while keeping sepal length fixed on the y-axis. Built as a reusable D3 chart, the visualization uses `scaleLinear`, `axisLeft`, `axisBottom`, and `selection.join` to smoothly transition circle positions and axis scales over one-second durations. The code also animates label updates and circle entry/exit states. The plot renders in SVG and relies on D3’s `csv` loader to fetch and parse the dataset.