Answer:
C) produce products and services that coordinate with hundreds or more firms and suppliers.
Step-by-step explanation:
Sometimes coordinating with a few vendors and a few clients may get complicated, imagine if you have to deal with hundreds of vendors and suppliers. Depending on the industry, sometimes the supply chain department (including upstream and downstream) can be very large.
For example a car manufacturer, who needs tens of thousands of different parts to manufacture every type of car, has hundreds of employees in the supply chain units.