Answer:
a. Decentralized with autonomous sub-unit.
Explanation:
YUM organizes its Decentralized structure with an autonomous subunit.
It is possible to affirm based on the information offered by the question, since a decentralized company is one whose decision-making process occurs in a more flexible way, that is, it is not taken only by a leader. This gives the advantage of better decision-making by employees who are experiencing the situation up close.
YUM has a variety of brands, each of which operates independently and is responsible for its own performance. Each has a separate CEO responsible for managing its supply chain, marketing and R&D, which confirms that each YUM brand operates autonomously and with its own decisions.