Which command is used to create a new layer in AutoCAD?

The command used to create a new layer in AutoCAD is "LAYER." This command opens the Layer Properties Manager, where users can add, modify, and manage layers in their drawings. In AutoCAD, layers are critical for organizing different elements in a drawing, allowing for better control over the visibility, printing, and properties of various objects.

Using the LAYER command efficiently allows users to create new layers with specific properties such as color, linetype, and line weight, which can be essential in managing complex drawings. This is particularly useful in collaborative environments where multiple users work on the same project, as it helps maintain consistency and clarity.

The other options do not represent valid commands for creating layers in AutoCAD. For example, "NEWLAYER" and "CREATE LAYER" do not exist as commands in AutoCAD, while "LAYERS" typically refers to the tab or area where layer-related tools can be accessed. Understanding the correct command for layer creation is fundamental for effective drawing management in AutoCAD.