To copy and paste a selection in Photoshop, you can follow these steps:
1.Open the image in Photoshop.
2.Use the selection tool of your choice to select the area you want to copy. For example, you can use the rectangular marquee tool or the lasso tool to draw a selection around the area.
3.Once you have made your selection, go to the "Edit" menu and choose "Copy" or use the keyboard shortcut "Ctrl+C" (Windows) or "Command+C" (Mac) to copy the selection.
4.Next, create a new layer or open a new document where you want to paste the copied selection.
5.Go to the "Edit" menu and choose "Paste" or use the keyboard shortcut "Ctrl+V" (Windows) or "Command+V" (Mac) to paste the selection.
6.The copied selection will now be pasted into the new layer or document. You can move, resize or transform it as needed.
7.If you want to paste the selection in the same document in a different location, you can use the move tool to drag and drop it to the desired location.
That's it! You have successfully copied and pasted a selection in Photoshop.