Answer:
A). The environment is a dynamic one, and department and frontline managers can come up with more responsive plans than can central leadership.
D). When managers come up with their own plans, they are likely to be more committed to following through on them.
Explanation:
As per the given description, the options A and D display the key reason for the organization opting for the 'planning specialists who would help the managers of the organization to form their own plans.' The organizational environment is quite dynamic and thus, the managers would be able to generate more constructive and responsible plans that can override leadership and promote commitment to follow through these plans. Therefore, these were the key reasons for which the organization has adopted the latter('planning specialists') over the former('strategic plans and direction to managers'). Hence, options A and D are the correct answers.