Final answer:
To add 'Call us today!' in WordArt, use the Insert tab, choose the fourth option in the first WordArt gallery row, and click outside the text box when done.
Step-by-step explanation:
To add WordArt that reads "Call us today!" in a presentation, you should use the Insert tab. After clicking on the Insert tab in your presentation software (like Microsoft PowerPoint), look for the WordArt option, which is often found in the Text section. Select the fourth option in the first row of the WordArt gallery to apply that specific style to your text. Once you have edited and are satisfied with your WordArt, click outside the text box to finish.