Multi-choice problem: Continue writing the next sentence in this paragraph:

How to change a background in adobe illustrator 
Make a rectangle the size of your artboard. 
The only way to permanently change the color of your background is to create a separate background layer. If you simply change the background color, the color will disappear when you print your artwork.

Available choices: -- File your artboard in microsoft illustrator. The easiest method to do this is with a file manager such as adobe.; -- Make a large rectangle to use as the background layer. You will be placing your art on a flat, hard surface.; -- Create a rectangle if your artboard is too large, such as 3 and a half square meters. Make your rectangle about 2 inches (5.08 cm) thick.; -- To create a background layer : Select the " rectangle tool " in the left tool bar. ( right column, fourth item from the top).;
To create a background layer : Select the " rectangle tool " in the left tool bar. ( right column, fourth item from the top).