Final answer:
The correct answer is D) key consumers, as they are not considered a separate component of Rugman and D'Cruz's flagship model, which includes key suppliers, key customers, and selected competitors.
Step-by-step explanation:
Rugman and D'Cruz's flagship model is a framework used in international business to analyze a multinational enterprise's (MNE) strategic and organizational characteristics. Within this model, the key components include key suppliers, key customers, and selected competitors. These elements help to understand the relationships and competitive dynamics that an MNE faces. On the contrary, key consumers are not considered a separate component of this model, as they are often encompassed within the customer base. The option 'focused differentiation' is a strategy that may be employed by a company within the context of the flagship model, but is not an element of the model itself.