Which is a fundamental rule to follow when creating data illustrations?

This question aligns with Measurement and Analysis , focusing on clear and effective data presentation. Option C is correct because a fundamental principle of data visualization is to ensure clarity and prevent misinterpretation . Proper labeling of axes, data points, legends, and titles ensures that the audience can accurately understand the information being presented. Without clear labeling, even accurate data can be misunderstood, leading to poor decision-making. Option A is helpful but not essential to the integrity of the visualization itself. Option B is not a standard rule in data visualization. Option D is incorrect because excessive text and visual elements can clutter the graphic and reduce clarity. CPXP principles emphasize that data should be presented in a simple, clear, and actionable manner to support informed improvement efforts.