The correct option is Jira administrators.

Jira administrators are responsible for product level administration in Jira. They can install and manage apps and plugins configure global Jira settings and manage schemes that affect multiple projects. Lina's tasks of installing and managing Jira plugins keeping project schemes updated and configuring global settings align directly with the responsibilities of a Jira administrator.

Site administrators manage the Atlassian site itself including user access product subscriptions and billing and they do not necessarily perform product specific tasks such as installing Jira plugins or updating Jira project schemes.

Project administrators control settings only within individual projects and they can manage project level configurations and permissions but they cannot install global plugins or change global Jira settings that affect the whole product.

Jira Software users are regular users who work on issues and boards and they do not have administrative privileges to install apps or alter global or product level configurations.

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