Answer:
add a title to a chart
change the way a chart looks
change the type of an existing chart
Explanation:
In Microsoft Excel, a chart tool design tab is used to design and customize the look, feel and properties of charts in order to meet the taste of a user. Charts are used generally to visually or graphically represent the data in an excel worksheet.
The tasks which can be completed using the Chart Tools Design tab are;
1. Add a title to a chart.
2. Change the way a chart looks.
3. Change the type of an existing chart.