Mintzberg classifies a large bureaucracy existing in a slowly changing environment that produces standard products and is dominated by centralized management as a bureaucracy.

The correct answer is letter "A": machine.

Explanation:

According to Canadian Professor Henry Mintzberg (born in 1939), a machine bureaucracy is a type of organizational centralized management where the decisions are made by top executives and performed by employees. These organizations are typically characterized by manufacturing specialized products.  

Machine bureaucracies mostly have slow environments which could represent a threat in a nowadays rapid-changing worldwide environment.

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