What is the standard of review applicable to the exercise of Ministerial or Administrative discretion?

The standard of review normally applicable to the exercise of discretion is reasonableness (Telfer v. Canada (Revenue Agency), 2009 FCA 23, at para. 24). In short, the exercise of Ministerial or administrative discretion will stand unless the decision is not “within a range of possible, acceptable outcomes which are defensible with respect to the facts and the law” (Dunsmuir v. New Brunswick, 2008 SCC 9, [2008] 1 S.C.R. 190, at paras. 47 and 51). V. Analysis