Which of the following is a substantive culture-changing action that a company's managers can undertake to alter a problem culture? a. identify aspects of the present culture that pose problems. b. revise policies and procedures in ways that will drive cultural change and replace senior executives who are resisting and obstructing needed organizational and cultural changes. c. shift from decentralized to centralized decision-making so as to give senior executives more authority and control in driving cultural change. d. make a concerted effort to turn the company's core competencies into distinctive competencies. e. empower employees to adopt whatever new work practices they believe will be an improvement.