Concept:The mode is the most frequent value in a data set. In a grouped frequency distribution, the mode can be determined graphically from a histogram.Explanation:A histogram uses bars to represent class intervals and their frequencies. The tallest bar shows the modal class. A formula is then applied using the histogram to find the exact mode.Ogives (less than or more than type) are used to locate the median, not the mode. A frequency polygon connects midpoints and shows the shape of the distribution but does not directly give the mode.Therefore, only the histogram provides a graphical method to obtain the mode.Answer:Option A: Histogram