Final answer:
To start a PowerPoint presentation from the beginning, you should click the “From Beginning” button on the Slide Show tab.
Step-by-step explanation:
To start a presentation from the beginning, playing it all the way through, you should click the “From Beginning” button on the Slide Show tab of PowerPoint. This will initiate the presentation from the first slide and proceed through all subsequent slides in the order they appear. In contrast, clicking “From Current Slide” will start the presentation from whichever slide you are currently on, “Set Up Slide Show” will allow you to configure presentation options, and “Begin Slide Show” is not an actual button within PowerPoint. Instead, the correct answer to the question would be A) From Beginning.