48. Nothing in paragraph 10 (1) (a) or (b), 12 (1) (a) or (b), 13 (b) or 14 (1) (a) or (2) (a) renders it unlawful to discriminate against a person on the ground of impairment in relation to employment or work which involves any of the following activities:
(a) participation in a dramatic performance or other entertainment in a role in which a person with a particular impairment is required for reasons of authenticity;
(b) participation as an artist's or photographic model in the production of a work of art, visual image or sequence of visual images for which a person with a particular impairment is required for reasons of authenticity;
(c) providing persons who have a particular impairment with services for the purpose of promoting their welfare, where those services can most effectively be provided by a person with a similar impairment;
(d) a prescribed activity.