Question

alana often uses mozilla firefox, which allows users to freely use, modify, and share their software without restrictions. what type of software license does it have?

Answer 1

Mozilla Firefox is distributed under the Mozilla Public License (MPL 2.0). That's a free/open-source license (a “weak copyleft” license) that lets users use, modify, and redistribute the software, with some conditions (modified MPL-covered files must keep their source available under the MPL).