The data describing obesity categories (normal weight, overweight, obese, morbidly obese) as percentages of the total population is best represented by which chart?

• A. Bar chart
• B. Pie chart
• C. Line chart
• D. Column chart

Answer: (B)

When showing how the population is divided into categories that sum to 100%, a pie chart is most appropriate because it visually represents parts of a whole. Each slice corresponds to a category’s share (normal weight, overweight, obese, morbidly obese), and the whole pie equals 100%, making it easy to see how large each group is relative to the total. Bar or column charts compare absolute values across categories but don’t emphasize that the categories are parts of a single whole. A line chart is suited for trends over time, not for static proportional distribution.