Flat and tall organizational structures are described according to:

A) Differentiation of objectives
B) Decision-making
C) Coordination
D) All of the above

Differentiation

The process of distinguishing or creating differences between objects, concepts, or entities.

Decision-Making

The cognitive process of selecting a course of action among several alternatives, crucial in clinical settings for determining patient care strategies.

Coordination

The organization of the different elements of a complex body or activity so as to enable them to work together effectively.