The correct option is "To filter issues based on specific criteria." Quick Filters allow users to easily narrow down the displayed issues on Agile boards by applying predefined filters. These filters help in focusing on relevant tasks.

In JIRA, an issue and its sub-task have a parent-child relationship. This means that a sub-task is a task that is part of a larger task, known as the parent issue. Sub-tasks are used to break down complex tasks into smaller, more manageable units of work.

JIRA can exchange both textual (such as issue details, comments) and non-textual data (such as attachments, screenshots) with other tools through integrations. This allows seamless communication and collaboration between JIRA and external systems.

The Atlassian Universal Plugin Manager (UPM) is responsible for managing and installing plugins and add-ons within JIRA. It provides administrators with a centralized interface to browse, install, update, and configure plugins, ensuring seamless integration and management of third-party extensions.

In JIRA, workflows can be associated with a specific project. This allows for customization and tailoring of workflows to the specific needs and processes of individual projects within an organization.

The "jira-users" group in JIRA is significant because it includes all users with access to the JIRA instance. Users added to this group typically have basic permissions to interact with projects and issues within JIRA. This group is fundamental for granting initial access to new users and ensuring that they can start using JIRA effectively. It is not exclusive to administrators or users with specific license types; rather, it encompasses all users in the JIRA environment.

Project roles in JIRA are collections of users who have common access rights and permissions within a specific project. They help in managing and controlling access to project resources and functionalities based on user roles.

Global Permissions in JIRA are used to control access to system-wide settings such as user management, application access, and administrative functions.

A "permission scheme" in JIRA is a predefined set of rules that determine the actions users or groups of users can perform within a project or instance. These schemes are applied to projects and define permissions for various operations, such as viewing, creating, editing, or deleting issues, managing project configurations, or accessing certain features.

Issue Linking in JIRA allows users to establish relationships or dependencies between different issues. This helps in tracking related tasks, identifying dependencies, and understanding the overall progress of a project. For example, you can link a bug report to the corresponding feature request, or link an epic to its related user stories.