Question

which tab group is used to modify the background of a chart that is contained in a powerpoint presentation?
chart styles
data
type
chart layouts

Explanation:

In PowerPoint, the "Chart styles" tab group is used to modify various visual aspects of a chart, including its background. The "Data" tab group is mainly for data - related operations like selecting data sources. The "Type" tab group is for changing the chart type. The "Chart layouts" tab group is for changing the layout of chart elements (e.g., axis labels, titles) rather than the background.

Answer:

Chart styles