What is the relationship between a defendant and a minor?

In Childs v. Desormeaux, without intending to establish rigid categories, the Chief Justice identified three situations where there may be a relationship giving rise to a duty of care and liability for failure to act: (1) where a defendant intentionally attracts and invites third parties to an inherent and obvious risk that he or she has created or controls; (2) where the parties have relationships of supervision and control, such as those of a parent and a minor child, or a teacher and student; and (3) where the defendant either exercises a public function or engage in a commercial enterprise that includes implied responsibilities to the public at large.