Somebody clue me please....

From Dictionaries.com: LIBERAL

adjective:

1.
favorable to progress or reform, as in political or religious affairs.
2.
(often initial capital letter) noting or pertaining to a political party advocating measures of progressive political reform.
3.
of, pertaining to, based on, or advocating liberalism, especially the freedom of the individual and governmental guarantees of individual rights and liberties.
4.
favorable to or in accord with concepts of maximum individual freedom possible, especially as guaranteed by law and secured by governmental protection of civil liberties.
5.
favoring or permitting freedom of action, especially with respect to matters of personal belief or expression:
a liberal policy toward dissident artists and writers.
6.
of or relating to representational forms of government rather than aristocracies and monarchies.
7.
free from prejudice or bigotry; tolerant:

Which of these seven definitions are approved for use on DU? I need to be taught how to be a Liberal.