Effectively changing strategies is often one of the most difficult tasks of management. Why do you think this is the case?

There are several reasons why effectively changing strategies is often one of the most difficult tasks of management. First of all, changing strategies requires a reevaluation of resources. When a new strategy is developed, the company has to decide whether there are enough economic resources, as well as manpower, to fulfill the new duties. Second, management also has to determine the correct steps to take in order to ensure that all the strategies are implemented successfully. Third, management might encounter resistance from people, as implementing a new strategy likely requires some adaptation time, as well as a slow-down of productivity.

it should be d or b but i'm sure it's d

answer; ///attempts to change more than once behavior at the same time;