Which command is primarily used for the installation of software in Red Hat-based Linux distributions?

The command primarily used for the installation of software in Red Hat-based Linux distributions is 'yum', which stands for Yellowdog Updater Modified. It serves as a package manager that facilitates the installation, updating, and removal of software packages. Yum resolves dependencies automatically, making it easier to manage packages from repositories, providing a streamlined process for keeping software up to date.

While zypper is a package manager used in openSUSE and SUSE Linux Enterprise, it is not applicable to Red Hat-based systems. Wget and curl are command-line tools primarily used for downloading files from the Internet, which differ in purpose and functionality from a package manager like yum. They do not manage software packages or handle installations. Therefore, yum is the correct answer as it is specifically designed for handling software management tasks in Red Hat-based distributions.