Which problem is indicated by the y-axis lacking numeric values or labels?

• A. The x-axis is mislabeled
• B. The data points are not shown
• C. The y-axis is missing numerical values or labels
• D. The grid lines are too dense

Answer: (C)

Understanding graphs relies on the axis scales and labels to read exact values. If the y-axis has no numbers or labels, you can’t determine the actual y-values or units—only relative positions of points. That makes it impossible to read precise measurements or compare this data to other sets. The issue described is specifically the absence of numerical values on the y-axis, which is what prevents interpreting how large the dependent variable is. The other situations—an x-axis label issue, missing data points, or grid lines being very dense—would present different symptoms and aren’t what’s described here.