(1) Where the Commission takes evidence in the course of inquiry into a matter, a person appearing as a witness before the Commission shall not, without lawful excuse, refuse or fail to answer a question, being a question relevant to the inquiry, that is put to the person by the Commission.
(2) For the purposes of subsection ( 1), a question shall be deemed to have been put to a witness by the Commission:
(a) if it is put by any of the members who are exercising the powers of the Commission in relation to the matter; or
(b) if, with the approval of a majority of the members who are exercising the powers of the Commission in relation to the matter, it is put by a person authorized by a majority of those members to appear in connexion with the taking of the evidence.