Choice "C" is correct. Before an exposure draft is issued for public comment, it must be approved by at least nine members of the IASB.
Choice "b" is incorrect. The issuance of a discussion paper is not required.
Choice "a" is incorrect. The IASB must approve a new IFRS by a vote of at least nine of the fifteen members. The IFRIC issues Interpretations and does not vote on the issuance of new IFRS.
Choice "d" is incorrect. Exposure drafts are issued for public comment.