4 is correct because there is no best method of implementing agile. 1, 2, and 3 are incorrect. 1 is incorrect because it is recommended that new teams generally want to follow a methodology more strictly, but we do not know the maturity
of Christopher’s team. 2 is incorrect because there is no single right way to implement agile. 3 is incorrect because most teams end up customizing their approach as they mature in their understanding and practice of agile. However,
that does not make their practice better than a team that strictly follows the methodology.