Capabilities/moodle/question:useall
From MoodleDocs
Template:Moodle 1.9*This allows a user to preview any question and include it in a Quiz activity
Note: You are currently viewing documentation for Moodle 2.1. Up-to-date documentation for the latest stable version is available here: Capabilities/moodle/question:useall.
Template:Moodle 1.9*This allows a user to preview any question and include it in a Quiz activity