In PowerPoint, what is the first step you should take to correct a spelling error?

The first step to correct a spelling error in PowerPoint is to click the spelling button under the review tab. Using the spell check function through this method allows you to initiate a comprehensive spelling and grammar check for the entire presentation. Once activated, the spell check will guide you through each misspelled word, providing suggested corrections along the way.

This approach is advantageous because it not only identifies the current misspelling but also highlights any additional errors throughout the document, ensuring that your entire presentation is reviewed for correct spelling. The other methods, while useful at specific points in the editing process, primarily address isolated errors rather than providing a thorough review.