The correct answer is: D. functional organization.
A functional organization is a type of organizational structure in which employees are grouped together based on their functional specialties, such as marketing, finance, or manufacturing. This type of structure is often used in small to medium-sized businesses, as it can be relatively simple to manage.
A matrix organization is a type of organizational structure in which employees are assigned to both a functional department and a project team. This type of structure is often used in large, complex businesses, as it allows for greater flexibility and coordination of work.
A flow network organization is a type of organizational structure in which employees are grouped together based on the flow of work through the organization. This type of structure is often used in manufacturing or service industries, as it allows for efficient movement of goods or services.
A modular organization is a type of organizational structure in which the organization is divided into smaller, self-contained modules. This type of structure is often used in high-technology industries, as it allows for greater flexibility and innovation.
E. None of the above is not a correct answer.