Step-by-step explanation:
Sprites are the images on a Scratch computer program screen. Every Scratch program is made up of sprites and the scripts (instructions) that control them. Scripts are programmed to make the sprites do things.
OR
If you want to create a new sprite, you can click the Choose a Sprite button, found at the bottom right of the screen. If you simply want to make the cat move, you can skip ahead to step two. Select a Scratch sprite character using this button at the bottom right of your new project screen.
(Same thing but different wording to understand better)