What package manager does Gentoo Linux use?dpkgPacmanyum, rpm, and Gnome software managerPortage

The package manager used by Gentoo Linux is Portage.

Portage is a powerful package management system that facilitates the installation, removal, and management of software packages on Gentoo. It utilizes a system of ebuilds, which are scripts that contain all the necessary information to build and install software. Portage is unique in that it allows users to customize their installations through the use of USE flags, which enable or disable features in software packages according to user preferences.

In contrast, the other options listed do not pertain to Gentoo:

• dpkg is the package manager for Debian and its derivatives.
• Pacman is used by Arch Linux.
• yum is a package manager for RPM-based distributions like Fedora or CentOS.
• Gnome Software Manager is a graphical tool for managing packages on various distributions but is not a package manager by itself.

Therefore, the correct answer is Portage.