Respuesta :
On a MacBook, you can change your desktop background by doing the following:
-Locate the file of the image you want to use for your background.
-Right-click so you can see the drop down of options.
-Select "Set desktop picture."

Answer:
On a MacBook, you can change your desktop background by doing the following:
-Locate the file of the image you want to use for your background.
-Right-click so you can see the drop down of options.
-Select "Set desktop picture."
Explanation:
there you go