Which of the following is the role of a fuse, used in series with any electrical appliance?

The role of a fuse is to prevent the exceeded current through the appliance.
The main role of a fuse is to limit the current through the appliance. It protects the appliance due to short-circuiting or overloading. When the current exceeds the limit for which the fuse is rated, it blows off, and the appliance gets disconnected from the electric supply.