The importance of copy
Copy is the written material within a layout and it is important because, without it, the reader wouldn't be able to tell what's going on. The copy is there for elaboration and to let the reader know what exactly is happening in clear words. Without the copy, the imagery is by itself and is left up to perception. For example, without the copy there to explain what's happening in the picture above, the activities within the picture are unclear and therefore, force the reader to use their imagination.