This visualization shows the number of tweets per day over time, plotted as a line chart with circular markers for each data point. The chart uses a time-scaled x-axis and linear y-axis, with gridlines and axis labels for clarity. The data is loaded from a local CSV file and rendered as SVG using D3 v4. The code employs `d3.scaleTime`, `d3.scaleLinear`, `d3.line` with monotone curve smoothing, plus `d3.axisBottom` and `d3.axisLeft` for axes. A responsive update function redraws the chart on window resize.