Answer:
b. all of the above
Explanation:
The correct answer is that all of the above determine an organization's structure.
The organization's mission determines its structure because it establishes the main goal of the organization, and everything in the organization is ultimately determined by that.
The organization's strategy also determines its structure because it establishes the departments, employees, and actions, similar to the way that the mission determines these things.
Finally, the organization's size is obviously related to its structure. A large organization will have a more complex structure than a smaller organization for example.
