The answer should be numbers 1, 2, 4, and 6
Some elements of a presentation can be changed by quickly customizing a theme. However, the slide master controls everything including the slide’s appearance, position and layout of placeholders, fonts, colors, and backgrounds. When you want all your slides to acquire the same images and fonts, you can make those changes in the Slide Master. While in the Slide Master View, you can also get an option to insert objects such as images and shapes.