Respuesta :
b.a personal letter because when you write all letter to the employees it should be a personal letter.
Answer:
B). Personal letter.
Explanation:
A personal letter would best accomplish the manager's purpose to notify his employees regarding the shift in store's hours as a common personal message to all the employees would help inform them about the change individually and therefore, more clearly. However, a personal letter includes personal matters and is not considered for professional matters yet in the given case, it would best serve his purpose. Thus, option B is the answer.