Which of the following is used to shorten the nail plate?

The use of nail clippers to shorten the nail plate is a common and effective method in nail care. Nail clippers are specifically designed to cut through the hard keratin of the nail plate efficiently, allowing for a clean and even trim. They come in various shapes and sizes to accommodate different nail types and needs, making them a versatile tool in both at-home and professional nail care settings.

In contrast, nail rasps are primarily used for filing or shaping the edges of the nail, not for cutting. A metal pusher serves the purpose of pushing back the cuticles, which is a crucial step in maintaining healthy nails but does not affect the length of the nail plate. Nippers are generally used to trim excess cuticle or hangnails rather than shortening the nail itself. Thus, nail clippers are the appropriate tool for the task of shortening the nail plate.