Concept:Specialization has specific recognized types, and anything not listed separately is not a type.
Explanation:The main types of specialization are product specialization, process specialization, geographical or territorial specialization, and specialization by sex.
Manager specialization is not a separate type.
It is simply a form of process specialization, where a manager focuses on one particular stage or process of production.
Since it falls under process specialization, it cannot stand as an independent type of specialization.
Answer:A. Manager Specialization.