Answer:
The correct answer is leadership
Step-by-step explanation:
Leadership is the capacity or the ability of the management of the firm or company in order to set and accomplish the challenging goals, take decisive as well as fast action when required, inspire others to perform at best level and outperform the competition.
Value chain is the process or the set of activities, which a business or firm operating in a particular industry performs so that could deliver the product to customer.
So, the need for the management of the value chain is closely related with communicating and defining the expectations is leadership as this will direct in order to make the value chain successful.