This interactive bar chart visualizes monthly child nutrition metrics—height and weight percentages—across eight administrative blocks in Palghar, India. Users select a metric (Height% or Weight%) and a month (August, September, or October) via dropdown menus. The chart animates transitions between selections using D3's `transition().duration()`, updating bar heights, colors, and the y-axis scale. A tooltip displays exact values on hover. The visualization uses `d3.csv` for data loading, `d3.scaleBand` and `d3.scaleLinear` for scales, `d3.interpolateRdYlGn` for color encoding, and renders SVG rects with text labels.