Tiffany recently discovered that the reject rate for her department has exceeded the standard for performance in this area. What should Tiffany do to exercise effective control? Selected answer will be automatically saved. For keyboard navigation, press up/down arrow keys to select an answer. a She should order more training for her workforce. b She should contact the maintenance department and have them come fix her machinery. c She should suspend the low performing workers in her department. d She should investigate and discover the cause of the problem. e None of these