Which of the following should you use if you want all the slides in the presentation to have the same 'look' ?

Answer: Option D

A PowerPoint presentation template is a pattern or blueprint of a slide or group of slides that you save as a .potx file. Templates can contain layouts, theme colors, theme fonts, theme effects, background styles, and even content. You can create your own custom templates and store them, reuse them, and share them with others.