To add a data label to a specific data point in an Excel chart, you would select the data point and enable data labels. Therefore, the correct answer is:
By selecting the data point and enabling data labels.
Here's how you can do it:
- Click on the chart to select it.
- Click on the specific data point you want to label (this may take a second click if the data points are grouped).
- Right-click on the selected data point and choose "Add Data Labels" from the context menu.
- If you want to format the data label, you can right-click on it again and choose "Format Data Labels" for further customization.