The correct answer is B. Insert.
The notes text box is a feature in PowerPoint that allows you to type notes that will be displayed on the presenter’s screen during a slide show. These notes can be used to remind the presenter of key points to discuss, or to provide additional information that is not included on the slides.
The slide show feature is used to display the slides in a presentation. You can use the slide show to rehearse your presentation, or to give the presentation to an audience.
The insert feature is used to add objects to a slide, such as text boxes, images, tables, and charts.
The slide master feature is used to create a master slide that contains elements that will be used on all of the slides in a presentation, such as the slide title, the slide number, and the date.
The zoom feature is used to enlarge or reduce the size of the slides in a presentation.
Therefore, the correct answer is B. Insert.