Answer:
Option D, This PC allows a user to save a presentation on a computer
Step-by-step explanation:
If one choses the option C, the file will be saved in the folder in which the user is working. Hence, option C is incorrect. 
Like wise option A is also incorrect as it will require user to provide a location as option for saving the file 
Option B is also incorrect as it will allow the user to save files in the C drive/D drive or one drive
Option D is correct because if the user choses this option file will be saved on the computer. 
Hence option D is correct