To insert slide numbers A. Insert a text box and select Insert > Page Number B. Insert a textbox and select Insert > Number > PageNumber C. Choose Insert > Slide Number D. Insert a new text box and select Insert > slide Number

The correct answer is: C. Choose Insert > Slide Number

To insert slide numbers in PowerPoint, follow these steps:

1. On the Insert tab, in the Text group, click Slide Number.
2. In the Slide Number dialog box, select the position where you want the slide number to appear, and then click OK.

The slide number will be inserted in the position you selected.

Option A is incorrect because it does not specify the correct location for the slide number. The slide number should be inserted in the Header or Footer, not in a text box.

Option B is incorrect because it does not specify the correct command. The correct command is Insert > Slide Number, not Insert > Number > PageNumber.

Option D is incorrect because it does not specify the correct location for the slide number. The slide number should be inserted in the Header or Footer, not in a new text box.