A. Management cannot control what happens in another company.  This would be an environmental issue that may propose a threat and should be taken into consideration, but it is not something that is controllable by management.

B. While employees are certainly an important part of the internal operations of any company, if they choose to leave, that is not something management can control.  However, management does have some control over employee relations including: salary, benefits, and working conditions.

C. Management would have control over this internal matter.  The use of a new machine that has not provided efficiencies that were anticipated should be evaluated for possible operational changes, employee training needs, or process modifications.

D. Management would be actively involved in contract negotiations with suppliers and would have control over the terms agreed upon.