Final answer:
Product quality, customer service, and technological innovation are bases of differentiation that may be difficult/costly to imitate.
Step-by-step explanation:
Product quality, customer service, and technological innovation are bases of differentiation that may be difficult/costly to imitate. These factors can give a company a competitive advantage and make it stand out from its competitors.
For example, a company that consistently produces high-quality products will have a reputation for excellence, which can be difficult for other companies to replicate. Similarly, providing exceptional customer service and constantly innovating with new technologies can also distinguish a company from its competitors.
Therefore, the correct answer is All of the above - all of these bases of differentiation may be difficult or costly for other companies to imitate.