First of all, why would you need to highlight text? One answer could be that you want to emphasize some important words or phrases within your slide. There is no ready to use tool within PowerPoint — on both Windows and Mac versions. At least within the Windows versions such as PowerPoint 2013, you can use Word’s highlighting options as a workaround — but this workaround does not work with PowerPoint 2011 for Mac — so we will use fake highlighting for the text, which also works extremely well.
Microsoft and the Office logo are trademarks or registered trademarks of Microsoft Corporation in the United States and/or other countries.