What is the name of KDE Plasma's file manager?

KDE Plasma's file manager is called Dolphin. It is specifically designed to integrate seamlessly with the KDE desktop environment, offering a wide range of features that enhance file management. Dolphin provides users with a user-friendly interface, allowing for easy navigation through directories and files.

One of its standout features is the ability to split the view, which lets users open multiple directories at once. It also includes powerful search capabilities, customizable views, and support for various file operations, making it efficient for managing files and folders. Additionally, Dolphin allows users to add widgets and manage tags and metadata, further enhancing its functionality.

The other options, Nautilus, Thunar, and Kraken, refer to different file managers: Nautilus is the file manager for the GNOME desktop, Thunar is associated with the XFCE desktop environment, and Kraken is not a standard file manager for Linux. Each of these file managers serves different desktop environments, further emphasizing that Dolphin is the specific solution within KDE Plasma.