Final answer:
The tools versions, dependency-check, and retire.js are used in software development to manage and check for vulnerabilities in project dependencies, ensuring application security.
Step-by-step explanation:
The tools mentioned in the question, a. versions, b. dependency-check, and c. retire.js, are used for identifying and mitigating security vulnerabilities in software dependencies. Version is a tool that helps developers manage project dependencies and determine which ones need to be updated. Dependency-check is an open-source tool that scans a project's dependencies to identify any known vulnerable components. Retire.js is focused on detecting vulnerabilities in JavaScript libraries and applications.
These tools are essential in the software development process to help ensure that applications are secure against known vulnerabilities by keeping dependencies up to date and identifying potential security threats before they can be exploited by attackers.