what is a trend line used for in charts to highlight the highest data point? A. to visually display the general direction of data over time B. to highlight the highest data point C. to calculate the average of data D. to format data in a series
A trend line is primarily used to **A. to visually display the general direction of data over time**. While it can indicate trends, its main purpose is not to highlight specific data points, such as the highest one.