Choice "C" is correct. The purpose of establishing quality control policies and procedures for deciding whether to accept or continue a client relationship is to minimize the likelihood of associating with clients whose management lacks integrity.
Choice "a" is incorrect. Establishing quality control policies and procedures for deciding whether to accept or continue a client relationship does not aid the auditor in monitoring the risk of material misstatement.
Choice "d" is incorrect. Establishing quality control policies and procedures for deciding whether to accept or continue a client relationship does not provide any assurance with respect to ensuring that audit firm personnel are adequately trained to fulfill their responsibilities.
Choice "b" is incorrect. Establishing quality control policies and procedures for deciding whether to accept or continue a client relationship does not result in documentation of criteria for responses to peer review comments.