The correct option is Open.

Open is the team managed project access level that allows any user who can sign in to the Jira site to search for view create and edit issues which exactly matches the requirement.

Public is incorrect because that option would allow anonymous access without signing in or may not be offered for team managed projects in some configurations so it does not match a requirement that specifies signed in users.

Limited is incorrect because it restricts access to a subset of authenticated users or specific groups and therefore does not allow every signed in user to view or edit issues.

Private is incorrect because it limits access to explicit project members and administrators and it prevents general signed in users from creating or editing issues unless they are added to the project.

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