Final answer:
The most common package-management systems for Ubuntu are dpkg and apt.
Step-by-step explanation:
When selecting a package-management system to install programs on your Linux Ubuntu distribution, there are several options to choose from. One of the most common package-management systems for Ubuntu is dpkg. Dpkg is the low-level package manager that handles the installation, removal, and maintenance of individual packages.
Another popular option is apt, which is a higher-level package management tool built on top of dpkg. Apt provides a user-friendly interface and additional features like dependency tracking and automatic updates.
Therefore, if I were to choose a package-management system for Ubuntu, I would choose dpkg along with apt.