This chart is used to visualize the FDT when a variable that is being used is a discrete.1 pointbar charthistogram chartline chart

To visualize the frequency distribution of a discrete variable, the most appropriate type of chart is a histogram.

Explanation:

1. Histogram: This chart is specifically designed to show the distribution of data by grouping discrete values into bins or intervals. Each bar represents the frequency of data points that fall within a certain range of values, making it ideal for discrete data.

2. Bar Chart: While a bar chart could also be used to represent discrete variables, it is typically better for comparing categories. Each bar represents a category rather than grouping ranges of values, which is less effective for showing the overall distribution.

3. Line Chart: A line chart is best for visualizing trends over time and is suited for continuous data rather than discrete data points. Thus, it is not the correct choice for this scenario.

In summary, while bar charts and line charts have their uses, a histogram is specifically designed to visualize the frequency distribution of discrete variables effectively.