If you want to insert some slides from other presentation into current one choose A. From Insert menu choose Slides from Files B. From Insert menu choose Slides from Presentation C. From Insert menu choose Slides D. None of above

The correct answer is A. From Insert menu choose Slides from Files.

To insert slides from another presentation into the current one, follow these steps:

1. Open the presentation that contains the slides you want to insert.
2. On the Insert tab, in the Slides group, click Slides from Files.
3. In the Insert Slides dialog box, navigate to the presentation that contains the slides you want to insert.
4. Select the slides you want to insert, and then click Insert.

The slides you selected are inserted into the current presentation at the current slide.

Option B is incorrect because it would insert slides from a presentation that is open in PowerPoint. Option C is incorrect because it would insert a new slide into the current presentation. Option D is incorrect because it is not a valid option.