Questions: Kent just switched out his original chart for a different type of chart which fit his financial presentation better. What action did he use to swap charts?

The answer is the third one: Selected the 'Change Chart Type' button.

Explanation for each option:

1. Selected the 'Switch Row/Column' button to switch the data: This option is used to change the way data is plotted in the chart, such as switching the data from rows to columns or vice versa. It does not change the type of chart.

2. Selected 'Add Chart Element' button and added new elements: This option allows you to add or modify elements within the existing chart, such as titles, labels, or legends. It does not change the type of chart.

3. Selected the 'Change Chart Type' button: This is the correct action for changing the type of chart. It allows you to switch from one chart type to another, such as from a bar chart to a line chart.

4. Right-clicked and used the add a trendline option: This option is used to add a trendline to an existing chart, which is a line indicating the general course or tendency of the data. It does not change the type of chart.

In summary, to swap charts, Kent would have used the 'Change Chart Type' button.