Final answer:
The function of management represented by chocolate makers preparing for the increase in December sales is planning.
Step-by-step explanation:
The function of management that is represented by chocolate makers preparing for the increase in December sales is planning. Planning is one of the four functions of management, along with organizing, leading, and controlling. Planning involves setting goals, developing strategies, and determining the actions needed to achieve those goals.
In this case, chocolate makers start preparing for the increase in December sales by anticipating the demand, adjusting production levels, and ensuring they have enough supplies to meet the increased demand.