In a merger or acquisition situation,changes to which of the following have the most direct impact on employees' lives?

A) communication methods
B) job training practices
C) leadership and mission
D) budgeting methods

Leadership and mission changes have the most direct impact on employees' lives during a merger or acquisition. This is because changes in leadership can directly affect an employee's day-to-day work environment and management style, while changes to the company's mission may impact an employee's job security and overall sense of purpose within the organization. Communication methods, job training practices, and budgeting methods can all be important aspects of a merger or acquisition, but their impact on employees' lives is typically indirect.