A chart element that identifies the patterns or colors that are assigned to the categories in the chart. A. Data series B. Legend C. Axis

## Step 1<br />The question is asking for the element of a chart that identifies the patterns or colors assigned to the categories in the chart. This is a fundamental aspect of chart design and interpretation.<br /><br />## Step 2<br />Option A, "Data series", refers to the set of related data points that are plotted on the chart. This is not the correct answer because the data series itself does not identify the patterns or colors assigned to the categories.<br /><br />## Step 3<br />Option B, "Legend", is the correct answer. The legend is a part of the chart that explains the patterns or colors assigned to the categories. It provides a guide to the reader on what each color or pattern represents.<br /><br />## Step 4<br />Option C, "Axis", refers to the lines that define the boundaries of the chart and often indicate the units of measure. This is not the correct answer because the axis does not identify the patterns or colors assigned to the categories.