<prompt> Frequency polygon is obtained by joining the points ofBar diagramComplete bar diagramMultiple bar diagramHistogram blocks  <response>: Ans. d Histogram blocks Ref. Park PSM 22nd 788; Methods in Bio-statistics, by B. K. Mahajan 6thp. 23Quantitative data is presented by the following graphsQualitative or discrete or enumeration data is presented by the following graphs: Histogram. Bar diagram Frequency polygon. Pie or sector diagram Frequency curve. Pictogram Line chart or graph. Spot map Cumulative frequency diagram Ogive. Scatter or dot diagram. 