Final answer:
Color is acceptable in both bar charts and line graphs as it aids in distinguishing between different data sets and enhances the graph's readability.
Step-by-step explanation:
It is acceptable to use color in both bar charts and line graphs. Color can be a powerful tool for differentiation and can help in distinguishing between different sets of data, making the graphs easier to interpret. For example, in bar graphs, color can be used to differentiate between the bars representing various categories, making it clear which bar corresponds to which category. Similarly, in line graphs, different colors for each line can help viewers distinguish multiple trends or data sets when plotted on the same graph.
However, caution should be exercised to make sure that the colors are clearly distinguishable and do not mislead the viewer about the data's relationships. When using color, it is important to ensure that all information, including the percentages and the scale, is legible and clear.